List of Doctor Who episodes (1963–1989)

Doctor Who is a British science fiction television programme produced by the BBC. As of 1 January 2021, 862 episodes of Doctor Who have aired, concluding the twelfth series. This includes one television movie and multiple specials, and encompasses 296 stories over 38 seasons, starting in 1963. Additionally, four charity specials and two animated serials have also been aired. The programme's high episode count has resulted in Doctor Who holding the world record for the highest number of episodes of a science-fiction programme.^[1]

Doctor Who ceased production in 1989, then resumed in 2005. The original series (1963–1989), generally consists of multi-episode serials; in the early seasons, and occasionally through its run, serials tend to link together, one story leading directly into the next. The 2005 revival trades the earlier serial format for a run of self-contained episodes, interspersed with occasional multi-part stories and structured into loose story arcs.

For the first two seasons of Doctor Who and most of the third (1963–1966), each episode carries its own title; the show displays no titles for overarching serials until The Savages, at which point the episodic titles cease. The titles below, for these early serials, are those in most common circulation, used for commercial releases and in resources such as the Doctor Who Reference Guide and the BBC's classic episode guide. With the show's revival in 2005, the programme returned to individual episode titles.

Due to the BBC's 1970s junking policy, 97 episodes of Doctor Who from the 1960s are no longer known to exist. As a result, 26 serials are currently incomplete, with one or more episodes represented only by audio, which in many cases is in addition to clips or still frames. For commercial release, some episodes have been reconstructed using off-air audio recordings, paired to surviving visuals or newly commissioned animation.

The story numbers below are not official designations; they are meant as a rough guide to placement in the overall context of the programme. There is some dispute, for instance, about whether to count Season 23's The Trial of a Time Lord as one or as four serials,^[2] and whether the unfinished serial Shada should be included.^[3] The numbering scheme in this list reflects an internal practice of describing "Planet of the Dead" (2009) as the 200th story.^[4] Other sources, such as the Region 1 classic Doctor Who DVD releases, use different numbering schemes, which diverge after the 108th story, The Horns of Nimon (1979–1980).

Series overview[]

The following table dictates the season or series in question for the programme as a whole.

Regular seasons[]

Season / Series		Doctor	Episodes	Serials	Originally aired		Average viewers (millions)
Season / Series		Doctor	Episodes	Serials	First aired	Last aired	Average viewers (millions)
Classic era
	Season 1	First Doctor	42	8	23 November 1963 (1963-11-23)	12 September 1964 (1964-09-12)	8.08
	Season 2		39	9	31 October 1964 (1964-10-31)	24 July 1965 (1965-07-24)	10.46
	Season 3		45	10	11 September 1965 (1965-09-11)	16 July 1966 (1966-07-16)	7.65
	Season 4^[a]	Second Doctor	43	9	10 September 1966 (1966-09-10)	1 July 1967 (1967-07-01)	7.10
	Season 5		40	7	2 September 1967 (1967-09-02)	1 June 1968 (1968-06-01)	7.23
	Season 6		44	7	10 August 1968 (1968-08-10)	21 June 1969 (1969-06-21)	6.38
	Season 7	Third Doctor	25	4	3 January 1970 (1970-01-03)	20 June 1970 (1970-06-20)	7.17
	Season 8		25	5	2 January 1971 (1971-01-02)	19 June 1971 (1971-06-19)	7.96
	Season 9		26	5	1 January 1972 (1972-01-01)	24 June 1972 (1972-06-24)	8.30
	Season 10		26	5	30 December 1972 (1972-12-30)	23 June 1973 (1973-06-23)	8.87
	Season 11		26	5	15 December 1973 (1973-12-15)	8 June 1974 (1974-06-08)	8.78
	Season 12	Fourth Doctor	20	5	28 December 1974 (1974-12-28)	10 May 1975 (1975-05-10)	10.00
	Season 13		26	6	30 August 1975 (1975-08-30)	6 March 1976 (1976-03-06)	10.14
	Season 14		26	6	4 September 1976 (1976-09-04)	2 April 1977 (1977-04-02)	11.08
	Season 15		26	6	3 September 1977 (1977-09-03)	11 March 1978 (1978-03-11)	8.98
	Season 16^[b]		26	6	2 September 1978 (1978-09-02)	24 February 1979 (1979-02-24)	8.61
	Season 17		20	5^[c]	1 September 1979 (1979-09-01)	12 January 1980 (1980-01-12)	11.21
	Season 18		28	7	30 August 1980 (1980-08-30)	21 March 1981 (1981-03-21)	5.82
	Season 19	Fifth Doctor	26	7	4 January 1982 (1982-01-04)	30 March 1982 (1982-03-30)	9.24
	Season 20		22	6	3 January 1983 (1983-01-03)	16 March 1983 (1983-03-16)	7.03
	Season 21^[d]		24	7	5 January 1984 (1984-01-05)	30 March 1984 (1984-03-30)	7.14
	Season 22^[e]	Sixth Doctor	13	6	5 January 1985 (1985-01-05)	30 March 1985 (1985-03-30)	7.12
	Season 23^[f]	Sixth Doctor	14	1	6 September 1986 (1986-09-06)	6 December 1986 (1986-12-06)	4.81
	Season 24	Seventh Doctor	14	4	7 September 1987 (1987-09-07)	7 December 1987 (1987-12-07)	4.94
	Season 25		14	4	5 October 1988 (1988-10-05)	4 January 1989 (1989-01-04)	5.34
	Season 26		14	4	6 September 1989 (1989-09-06)	6 December 1989 (1989-12-06)	4.15
Revived era
	Series 1	Ninth Doctor	13	10	26 March 2005 (2005-03-26)	18 June 2005 (2005-06-18)	7.95
	Series 2	Tenth Doctor	13	10	15 April 2006 (2006-04-15)	8 July 2006 (2006-07-08)	7.71
	Series 3		13	9	31 March 2007 (2007-03-31)	30 June 2007 (2007-06-30)	7.55
	Series 4		13	10	5 April 2008 (2008-04-05)	5 July 2008 (2008-07-05)	8.05
	Series 5	Eleventh Doctor	13	10	3 April 2010 (2010-04-03)	26 June 2010 (2010-06-26)	7.73
	Series 6		13	11	23 April 2011 (2011-04-23)	1 October 2011 (2011-10-01)	7.52
	Series 7		13	13	1 September 2012 (2012-09-01)	18 May 2013 (2013-05-18)	7.44
	Series 8	Twelfth Doctor	12	11	23 August 2014 (2014-08-23)	8 November 2014 (2014-11-08)	7.26
	Series 9		12	9	19 September 2015 (2015-09-19)	5 December 2015 (2015-12-05)	6.03
	Series 10		12	11	15 April 2017 (2017-04-15)	1 July 2017 (2017-07-01)	5.46
	Series 11	Thirteenth Doctor	10	10	7 October 2018 (2018-10-07)	9 December 2018 (2018-12-09)	7.96
	Series 12		10	8	1 January 2020 (2020-01-01)	1 March 2020 (2020-03-01)	5.40
	Series 13		6^[5]	1^[6]	2021 (2021)^[7]	TBA	TBA

Specials[]

	Doctor	Episodes	Originally aired
20th Anniversary	Fifth Doctor	1	25 November 1983 (1983-11-25)
Television movie	Eighth Doctor	1	12 May 1996 (1996-05-12)
2005 Christmas	Tenth Doctor	1	25 December 2005 (2005-12-25)
2006 Christmas		1	25 December 2006 (2006-12-25)
2007 Christmas		1	25 December 2007 (2007-12-25)
2008–2010 specials^[g]		5	25 December 2008 – 1 January 2010 (2008-12-25 – 2010-01-01)
2010 Christmas	Eleventh Doctor	1	25 December 2010 (2010-12-25)
2011 Christmas		1	25 December 2011 (2011-12-25)
2012 Christmas		1	25 December 2012 (2012-12-25)
2013 specials^[h]		2	23 November – 25 December 2013 (2013-11-23 – 2013-12-25)
2014 Christmas	Twelfth Doctor	1	25 December 2014 (2014-12-25)
2015 Christmas		1	25 December 2015 (2015-12-25)
2016 Christmas		1	25 December 2016 (2016-12-25)
2017 Christmas		1	25 December 2017 (2017-12-25)
2019 New Year	Thirteenth Doctor	1	1 January 2019 (2019-01-01)
2020 New Year		–^[i]	1 January 2020 (2020-01-01)
2021 New Year		1	1 January 2021 (2021-01-01)
2022 specials^[j]		3^[8]	1 January 2022 (2022-01-01) –^[8]

Notes[]

^ The First Doctor remained for the first two serials of season 4. The Second Doctor featured for the remainder of the season from the third serial, The Power of the Daleks.
^ Also known by its subtitle, The Key to Time.
^ Shada was left unfinished due to a strike. The story was later completed and officially released on home media in 2017. The voices of the original actors with new animation was incorporated to bridge the gaps between the recorded live-action segments. It is not included in the episode or story counts as it was not broadcast.
^ The Fifth Doctor regenerated in the sixth serial of season 21. The Sixth Doctor featured only in the final serial, The Twin Dilemma.
^ A change in transmission format for this season only as episodes were 45 minutes instead of the usual 23 minutes. Thus a traditional 4-part story was transmitted in 2 parts.
^ Also known by its subtitle, The Trial of a Time Lord.
^ These specials consist of the 2008 Christmas, 2009 Easter, 2009 November and the 2009–10 Christmas/New Year's Day episodes.
^ These specials consist of the 50th Anniversary and 2013 Christmas episodes.
^ This episode was the first episode of the twelfth series, and thus not a special aired outside of a series, but it was aired outside of the respective series' traditional timeslot to air deliberately on New Year's Day.
^ These specials consist of the 2022 New Year’s Day episode, an early 2022 special, and a late 2022 special for the BBC's centenary celebrations.^[8]

Episodes[]

First Doctor[]

The first incarnation of the Doctor was portrayed by William Hartnell. During Hartnell's tenure, the episodes were a mixture of stories set on Earth of the future with extraterrestrial influence, on alien planets, and in historical events without extraterrestrial influence, such as Marco Polo, one of the lost serials. In his last story, The Tenth Planet, the Doctor gradually grew weaker to the point of collapsing at the end of the fourth episode, leading to his regeneration.

Season 1 (1963–1964) []

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
1	1	An Unearthly Child	"An Unearthly Child"	Waris Hussein	Anthony Coburn and C. E. Webber (uncredited)	23 November 1963 (1963-11-23)	A	4.4	63
			"The Cave of Skulls"	Waris Hussein	Anthony Coburn	30 November 1963 (1963-11-30)	A	5.9	59
			"The Forest of Fear"	Waris Hussein	Anthony Coburn	7 December 1963 (1963-12-07)	A	6.9	56
			"The Firemaker"	Waris Hussein	Anthony Coburn	14 December 1963 (1963-12-14)	A	6.4	55
2	2	The Daleks	"The Dead Planet"	Christopher Barry	Terry Nation	21 December 1963 (1963-12-21)	B	6.9	59
			"The Survivors"	Christopher Barry	Terry Nation	28 December 1963 (1963-12-28)	B	6.4	58
			"The Escape"	Richard Martin	Terry Nation	4 January 1964 (1964-01-04)	B	8.9	63
			"The Ambush"	Christopher Barry	Terry Nation	11 January 1964 (1964-01-11)	B	9.9	63
			"The Expedition"	Christopher Barry	Terry Nation	18 January 1964 (1964-01-18)	B	9.9	63
			"The Ordeal"	Richard Martin	Terry Nation	25 January 1964 (1964-01-25)	B	10.4	63
			"The Rescue"	Richard Martin	Terry Nation	1 February 1964 (1964-02-01)	B	10.4	65
3	3	The Edge of Destruction	"The Edge of Destruction"	Richard Martin	David Whitaker	8 February 1964 (1964-02-08)	C	10.4	61
3	3	The Edge of Destruction	"The Brink of Disaster"	Frank Cox	David Whitaker	15 February 1964 (1964-02-15)	C	9.9	60
4	4	Marco Polo	"The Roof of the World"^†	Waris Hussein	John Lucarotti	22 February 1964 (1964-02-22)	D	9.4	63
			"The Singing Sands"^†	Waris Hussein	John Lucarotti	29 February 1964 (1964-02-29)	D	9.4	62
			"Five Hundred Eyes"^†	Waris Hussein	John Lucarotti	7 March 1964 (1964-03-07)	D	9.4	62
			"The Wall of Lies"^†	John Crockett	John Lucarotti	14 March 1964 (1964-03-14)	D	9.9	60
			"Rider from Shang-Tu"^†	Waris Hussein	John Lucarotti	21 March 1964 (1964-03-21)	D	9.4	59
			"Mighty Kublai Khan"^†	Waris Hussein	John Lucarotti	28 March 1964 (1964-03-28)	D	8.4	59
			"Assassin at Peking"^†	Waris Hussein	John Lucarotti	4 April 1964 (1964-04-04)	D	10.4	59
5	5	The Keys of Marinus	"The Sea of Death"	John Gorrie	Terry Nation	11 April 1964 (1964-04-11)	E	9.9	62
			"The Velvet Web"	John Gorrie	Terry Nation	18 April 1964 (1964-04-18)	E	9.4	60
			"The Screaming Jungle"	John Gorrie	Terry Nation	25 April 1964 (1964-04-25)	E	9.9	61
			"The Snows of Terror"	John Gorrie	Terry Nation	2 May 1964 (1964-05-02)	E	10.4	60
			"Sentence of Death"	John Gorrie	Terry Nation	9 May 1964 (1964-05-09)	E	7.9	61
			"The Keys of Marinus"	John Gorrie	Terry Nation	16 May 1964 (1964-05-16)	E	6.9	63
6	6	The Aztecs	"The Temple of Evil"	John Crockett	John Lucarotti	23 May 1964 (1964-05-23)	F	7.4	62
			"The Warriors of Death"	John Crockett	John Lucarotti	30 May 1964 (1964-05-30)	F	7.4	62
			"The Bride of Sacrifice"	John Crockett	John Lucarotti	6 June 1964 (1964-06-06)	F	7.9	57
			"The Day of Darkness"	John Crockett	John Lucarotti	13 June 1964 (1964-06-13)	F	7.4	58
7	7	The Sensorites	"Strangers in Space"	Mervyn Pinfield	Peter R. Newman	20 June 1964 (1964-06-20)	G	7.9	59
			"The Unwilling Warriors"	Mervyn Pinfield	Peter R. Newman	27 June 1964 (1964-06-27)	G	6.9	59
			"Hidden Danger"	Mervyn Pinfield	Peter R. Newman	11 July 1964 (1964-07-11)	G	7.4	56
			"A Race Against Death"	Mervyn Pinfield	Peter R. Newman	18 July 1964 (1964-07-18)	G	5.5	60
			"Kidnap"	Frank Cox	Peter R. Newman	25 July 1964 (1964-07-25)	G	6.9	57
			"A Desperate Venture"	Frank Cox	Peter R. Newman	1 August 1964 (1964-08-01)	G	6.9	57
8	8	The Reign of Terror	"A Land of Fear"	Henric Hirsch	Dennis Spooner	8 August 1964 (1964-08-08)	H	6.9	58
			"Guests of Madame Guillotine"	Henric Hirsch	Dennis Spooner	15 August 1964 (1964-08-15)	H	6.9	54
			"A Change of Identity"	Henric Hirsch	Dennis Spooner	22 August 1964 (1964-08-22)	H	6.9	55
			"The Tyrant of France"^†	Henric Hirsch	Dennis Spooner	29 August 1964 (1964-08-29)	H	6.4	53
			"A Bargain of Necessity"^†	Henric Hirsch	Dennis Spooner	5 September 1964 (1964-09-05)	H	6.9	53
			"Prisoners of Conciergerie"	Henric Hirsch	Dennis Spooner	12 September 1964 (1964-09-12)	H	6.4	55

^† Episode is missing

Season 2 (1964–1965) []

This season saw the departure of Carole Ann Ford as Susan Foreman in The Dalek Invasion of Earth, replaced by Maureen O'Brien as Vicki in The Rescue. William Russell and Jacqueline Hill also departed their roles as Ian Chesterton and Barbara Wright, respectively, in The Chase, replaced by Peter Purves as Steven Taylor.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
9	1	Planet of Giants	"Planet of Giants"	Mervyn Pinfield	Louis Marks	31 October 1964 (1964-10-31)	J	8.4	57
			"Dangerous Journey"	Mervyn Pinfield	Louis Marks	7 November 1964 (1964-11-07)	J	8.4	58
			"Crisis"	Douglas Camfield	Louis Marks	14 November 1964 (1964-11-14)	J	8.9	59
10	2	The Dalek Invasion of Earth	"World's End"	Richard Martin	Terry Nation	21 November 1964 (1964-11-21)	K	11.4	63
			"The Daleks"	Richard Martin	Terry Nation	28 November 1964 (1964-11-28)	K	12.4	59
			"Day of Reckoning"	Richard Martin	Terry Nation	5 December 1964 (1964-12-05)	K	11.9	59
			"The End of Tomorrow"	Richard Martin	Terry Nation	12 December 1964 (1964-12-12)	K	11.9	59
			"The Waking Ally"	Richard Martin	Terry Nation	19 December 1964 (1964-12-19)	K	11.4	58
			"Flashpoint"	Richard Martin	Terry Nation	26 December 1964 (1964-12-26)	K	12.4	63
11	3	The Rescue	"The Powerful Enemy"	Christopher Barry	David Whitaker	2 January 1965 (1965-01-02)	L	12.0	57
11	3	The Rescue	"Desperate Measures"	Christopher Barry	David Whitaker	9 January 1965 (1965-01-09)	L	13.0	59
12	4	The Romans	"The Slave Traders"	Christopher Barry	Dennis Spooner	16 January 1965 (1965-01-16)	M	13.0	53
			"All Roads Lead to Rome"	Christopher Barry	Dennis Spooner	23 January 1965 (1965-01-23)	M	11.5	51
			"Conspiracy"	Christopher Barry	Dennis Spooner	30 January 1965 (1965-01-30)	M	10.0	50
			"Inferno"	Christopher Barry	Dennis Spooner	6 February 1965 (1965-02-06)	M	12.0	50
13	5	The Web Planet	"The Web Planet"	Richard Martin	Bill Strutton	13 February 1965 (1965-02-13)	N	13.5	56
			"The Zarbi"	Richard Martin	Bill Strutton	20 February 1965 (1965-02-20)	N	12.5	53
			"Escape to Danger"	Richard Martin	Bill Strutton	27 February 1965 (1965-02-27)	N	12.5	53
			"Crater of Needles"	Richard Martin	Bill Strutton	6 March 1965 (1965-03-06)	N	13.0	49
			"Invasion"	Richard Martin	Bill Strutton	13 March 1965 (1965-03-13)	N	12.0	48
			"The Centre"	Richard Martin	Bill Strutton	20 March 1965 (1965-03-20)	N	11.5	42
14	6	The Crusade	"The Lion"	Douglas Camfield	David Whitaker	27 March 1965 (1965-03-27)	P	10.5	51
			"The Knight of Jaffa"^†	Douglas Camfield	David Whitaker	3 April 1965 (1965-04-03)	P	8.5	50
			"The Wheel of Fortune"	Douglas Camfield	David Whitaker	10 April 1965 (1965-04-10)	P	9.0	49
			"The Warlords"^†	Douglas Camfield	David Whitaker	17 April 1965 (1965-04-17)	P	9.5	48
15	7	The Space Museum	"The Space Museum"	Mervyn Pinfield	Glyn Jones	24 April 1965 (1965-04-24)	Q	10.5	61
			"The Dimensions of Time"	Mervyn Pinfield	Glyn Jones	1 May 1965 (1965-05-01)	Q	9.2	53
			"The Search"	Mervyn Pinfield	Glyn Jones	8 May 1965 (1965-05-08)	Q	8.5	56
			"The Final Phase"	Mervyn Pinfield	Glyn Jones	15 May 1965 (1965-05-15)	Q	8.5	49
16	8	The Chase	"The Executioners"	Richard Martin	Terry Nation	22 May 1965 (1965-05-22)	R	10.0	57
			"The Death of Time"	Richard Martin	Terry Nation	29 May 1965 (1965-05-29)	R	9.5	56
			"Flight Through Eternity"	Richard Martin	Terry Nation	5 June 1965 (1965-06-05)	R	9.0	55
			"Journey into Terror"	Richard Martin	Terry Nation	12 June 1965 (1965-06-12)	R	9.5	54
			"The Death of Doctor Who"	Richard Martin	Terry Nation	19 June 1965 (1965-06-19)	R	9.0	56
			"The Planet of Decision"	Richard Martin and Douglas Camfield (uncredited)	Terry Nation	26 June 1965 (1965-06-26)	R	9.5	57
17	9	The Time Meddler	"The Watcher"	Douglas Camfield	Dennis Spooner	3 July 1965 (1965-07-03)	S	8.9	57
			"The Meddling Monk"	Douglas Camfield	Dennis Spooner	10 July 1965 (1965-07-10)	S	8.8	49
			"A Battle of Wits"	Douglas Camfield	Dennis Spooner	17 July 1965 (1965-07-17)	S	7.7	53
			"Checkmate"	Douglas Camfield	Dennis Spooner	24 July 1965 (1965-07-24)	S	8.3	54

^† Episode is missing

Season 3 (1965–1966) []

O'Brien departed the role of Vicki in The Myth Makers, replaced by Jackie Lane as Dodo Chaplet. The Savages marked the final appearance of Steven, and The War Machines introduced companions Ben and Polly. The practice of giving each individual episode a different title was abandoned after The Gunfighters, near the end of the season.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
18	1	Galaxy 4	"Four Hundred Dawns"^†	Derek Martinus	William Emms	11 September 1965 (1965-09-11)	T	9.0	56
			"Trap of Steel"^†	Derek Martinus	William Emms	18 September 1965 (1965-09-18)	T	9.5	55
			"Air Lock"	Derek Martinus	William Emms	25 September 1965 (1965-09-25)	T	11.3	54
			"The Exploding Planet"^†	Derek Martinus	William Emms	2 October 1965 (1965-10-02)	T	9.9	53
19	2	"Mission to the Unknown"^†	N/A	Derek Martinus	Terry Nation	9 October 1965 (1965-10-09)	T/A	8.3	54
20	3	The Myth Makers	"Temple of Secrets"^†	Michael Leeston-Smith	Donald Cotton	16 October 1965 (1965-10-16)	U	8.3	48
			"Small Prophet, Quick Return"^†	Michael Leeston-Smith	Donald Cotton	23 October 1965 (1965-10-23)	U	8.1	51
			"Death of a Spy"^†	Michael Leeston-Smith	Donald Cotton	30 October 1965 (1965-10-30)	U	8.7	49
			"Horse of Destruction"^†	Michael Leeston-Smith	Donald Cotton	6 November 1965 (1965-11-06)	U	8.3	52
21	4	The Daleks' Master Plan	"The Nightmare Begins"^†	Douglas Camfield	Terry Nation	13 November 1965 (1965-11-13)	V	9.1	54
			"Day of Armageddon"	Douglas Camfield	Terry Nation	20 November 1965 (1965-11-20)	V	9.8	52
			"Devil's Planet"^†	Douglas Camfield	Terry Nation	27 November 1965 (1965-11-27)	V	10.3	52
			"The Traitors"^†	Douglas Camfield	Terry Nation	4 December 1965 (1965-12-04)	V	9.5	51
			"Counter Plot"	Douglas Camfield	Terry Nation	11 December 1965 (1965-12-11)	V	9.9	53
			"Coronas of the Sun"^†	Douglas Camfield	Dennis Spooner	18 December 1965 (1965-12-18)	V	9.1	56
			"The Feast of Steven"^†	Douglas Camfield	Terry Nation	25 December 1965 (1965-12-25)	V	7.9	39
			"Volcano"^†	Douglas Camfield	Dennis Spooner	1 January 1966 (1966-01-01)	V	9.6	49
			"Golden Death"^†	Douglas Camfield	Dennis Spooner	8 January 1966 (1966-01-08)	V	9.2	52
			"Escape Switch"	Douglas Camfield	Dennis Spooner	15 January 1966 (1966-01-15)	V	9.5	50
			"The Abandoned Planet"^†	Douglas Camfield	Dennis Spooner	22 January 1966 (1966-01-22)	V	9.8	49
			"Destruction of Time"^†	Douglas Camfield	Dennis Spooner	29 January 1966 (1966-01-29)	V	8.6	57
22	5	The Massacre of St Bartholomew's Eve	"War of God"^†	Paddy Russell	John Lucarotti	5 February 1966 (1966-02-05)	W	8.0	52
			"The Sea Beggar"^†	Paddy Russell	John Lucarotti	12 February 1966 (1966-02-12)	W	6.0	52
			"Priest of Death"^†	Paddy Russell	John Lucarotti	19 February 1966 (1966-02-19)	W	5.9	49
			"Bell of Doom"^†	Paddy Russell	John Lucarotti and Donald Tosh	26 February 1966 (1966-02-26)	W	5.8	53
23	6	The Ark	"The Steel Sky"	Michael Imison	Paul Erickson and Lesley Scott	5 March 1966 (1966-03-05)	X	5.5	55
			"The Plague"	Michael Imison	Paul Erickson and Lesley Scott	12 March 1966 (1966-03-12)	X	6.9	56
			"The Return"	Michael Imison	Paul Erickson and Lesley Scott	19 March 1966 (1966-03-19)	X	6.2	51
			"The Bomb"	Michael Imison	Paul Erickson and Lesley Scott	26 March 1966 (1966-03-26)	X	7.3	50
24	7	The Celestial Toymaker	"The Celestial Toyroom"^†	Bill Sellars	Brian Hayles and Donald Tosh (uncredited)	2 April 1966 (1966-04-02)	Y	8.0	48
			"The Hall of Dolls"^†	Bill Sellars	Brian Hayles and Donald Tosh (uncredited)	9 April 1966 (1966-04-09)	Y	8.0	49
			"The Dancing Floor"^†	Bill Sellars	Brian Hayles and Donald Tosh (uncredited)	16 April 1966 (1966-04-16)	Y	9.4	44
			"The Final Test"	Bill Sellars	Brian Hayles and Donald Tosh (uncredited)	23 April 1966 (1966-04-23)	Y	7.8	43
25	8	The Gunfighters	"A Holiday for the Doctor"	Rex Tucker	Donald Cotton	30 April 1966 (1966-04-30)	Z	6.5	45
			"Don't Shoot the Pianist"	Rex Tucker	Donald Cotton	7 May 1966 (1966-05-07)	Z	6.6	39
			"Johnny Ringo"	Rex Tucker	Donald Cotton	14 May 1966 (1966-05-14)	Z	6.2	36
			"The O.K. Corral"	Rex Tucker	Donald Cotton	21 May 1966 (1966-05-21)	Z	5.7	30
26	9	The Savages	"Episode 1"^†	Christopher Barry	Ian Stuart Black	28 May 1966 (1966-05-28)	AA	4.8	48
			"Episode 2"^†	Christopher Barry	Ian Stuart Black	4 June 1966 (1966-06-04)	AA	5.6	49
			"Episode 3"^†	Christopher Barry	Ian Stuart Black	11 June 1966 (1966-06-11)	AA	5.0	48
			"Episode 4"^†	Christopher Barry	Ian Stuart Black	18 June 1966 (1966-06-18)	AA	4.5	48
27	10	The War Machines	"Episode 1"	Michael Ferguson	Ian Stuart Black	25 June 1966 (1966-06-25)	BB	5.4	49
			"Episode 2"	Michael Ferguson	Ian Stuart Black	2 July 1966 (1966-07-02)	BB	4.7	45
			"Episode 3"	Michael Ferguson	Ian Stuart Black	9 July 1966 (1966-07-09)	BB	5.3	44
			"Episode 4"	Michael Ferguson	Ian Stuart Black	16 July 1966 (1966-07-16)	BB	5.5	39

^† : Episode is missing

Season 4 (1966–1967) []

The Smugglers and The Tenth Planet were the last serials to star the First Doctor, his regeneration to the Second occurring in the latter. It is also notable as the season with the most missing episodes, with not one serial existing in its entirety.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
28	1	The Smugglers	"Episode 1"^†	Julia Smith	Brian Hayles	10 September 1966 (1966-09-10)	CC	4.3	47
			"Episode 2"^†	Julia Smith	Brian Hayles	17 September 1966 (1966-09-17)	CC	4.9	45
			"Episode 3"^†	Julia Smith	Brian Hayles	24 September 1966 (1966-09-24)	CC	4.2	43
			"Episode 4"^†	Julia Smith	Brian Hayles	1 October 1966 (1966-10-01)	CC	4.5	43
29	2	The Tenth Planet	"Episode 1"	Derek Martinus	Kit Pedler	8 October 1966 (1966-10-08)	DD	5.5	50
			"Episode 2"	Derek Martinus	Kit Pedler	15 October 1966 (1966-10-15)	DD	6.4	48
			"Episode 3"	Derek Martinus	Kit Pedler and Gerry Davis	22 October 1966 (1966-10-22)	DD	7.6	48
			"Episode 4"^†	Derek Martinus	Kit Pedler and Gerry Davis	29 October 1966 (1966-10-29)	DD	7.5	47

^† : Episode is missing

Second Doctor[]

The Second Doctor was portrayed by Patrick Troughton, whose serials were more action-oriented than those of his predecessor. Additionally, after The Highlanders, stories moved away from the purely historical ones that featured during William Hartnell's tenure; instead, any historical tales also included a science fiction element. Patrick Troughton retained the role until the last episode of The War Games when members of the Doctor's race, the Time Lords, put him on trial for breaking the laws of time. The Doctor was forced to regenerate and thereafter exiled on Earth.

Season 4 (1966–1967) continued[]

This season introduced companions Jamie McCrimmon (Frazer Hines) and Victoria Waterfield (Deborah Watling), in The Highlanders and The Evil of the Daleks, respectively. Ben and Polly departed in The Faceless Ones.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
30	3	The Power of the Daleks	"Episode One"^†	Christopher Barry	David Whitaker	5 November 1966 (1966-11-05)	EE	7.9	43
			"Episode Two"^†	Christopher Barry	David Whitaker	12 November 1966 (1966-11-12)	EE	7.8	45
			"Episode Three"^†	Christopher Barry	David Whitaker	19 November 1966 (1966-11-19)	EE	7.5	44
			"Episode Four"^†	Christopher Barry	David Whitaker	26 November 1966 (1966-11-26)	EE	7.8	47
			"Episode Five"^†	Christopher Barry	David Whitaker	3 December 1966 (1966-12-03)	EE	8.0	48
			"Episode Six"^†	Christopher Barry	David Whitaker	10 December 1966 (1966-12-10)	EE	7.8	47
31	4	The Highlanders	"Episode 1"^†	Hugh David	Elwyn Jones and Gerry Davis	17 December 1966 (1966-12-17)	FF	6.7	47
			"Episode 2"^†	Hugh David	Elwyn Jones and Gerry Davis	24 December 1966 (1966-12-24)	FF	6.8	46
			"Episode 3"^†	Hugh David	Elwyn Jones and Gerry Davis	31 December 1966 (1966-12-31)	FF	7.4	47
			"Episode 4"^†	Hugh David	Elwyn Jones and Gerry Davis	7 January 1967 (1967-01-07)	FF	7.3	47
32	5	The Underwater Menace	"Episode 1"^†	Julia Smith	Geoffrey Orme	14 January 1967 (1967-01-14)	GG	8.3	48
			"Episode 2"	Julia Smith	Geoffrey Orme	21 January 1967 (1967-01-21)	GG	7.5	46
			"Episode 3"	Julia Smith	Geoffrey Orme	28 January 1967 (1967-01-28)	GG	7.1	45
			"Episode 4"^†	Julia Smith	Geoffrey Orme	4 February 1967 (1967-02-04)	GG	7.0	47
33	6	The Moonbase	"Episode 1"^†	Morris Barry	Kit Pedler	11 February 1967 (1967-02-11)	HH	8.1	50
			"Episode 2"	Morris Barry	Kit Pedler	18 February 1967 (1967-02-18)	HH	8.9	49
			"Episode 3"^†	Morris Barry	Kit Pedler	25 February 1967 (1967-02-25)	HH	8.2	53
			"Episode 4"	Morris Barry	Kit Pedler	4 March 1967 (1967-03-04)	HH	8.1	58
34	7	The Macra Terror	"Episode 1"^†	John Davies	Ian Stuart Black	11 March 1967 (1967-03-11)	JJ	8.0	50
			"Episode 2"^†	John Davies	Ian Stuart Black	18 March 1967 (1967-03-18)	JJ	7.9	48
			"Episode 3"^†	John Davies	Ian Stuart Black	25 March 1967 (1967-03-25)	JJ	8.5	52
			"Episode 4"^†	John Davies	Ian Stuart Black	1 April 1967 (1967-04-01)	JJ	8.4	49
35	8	The Faceless Ones	"Episode 1"	Gerry Mill	David Ellis and Malcolm Hulke	8 April 1967 (1967-04-08)	KK	8.0	51
			"Episode 2"^†	Gerry Mill	David Ellis and Malcolm Hulke	15 April 1967 (1967-04-15)	KK	6.4	50
			"Episode 3"	Gerry Mill	David Ellis and Malcolm Hulke	22 April 1967 (1967-04-22)	KK	7.9	53
			"Episode 4"^†	Gerry Mill	David Ellis and Malcolm Hulke	29 April 1967 (1967-04-29)	KK	6.9	55
			"Episode 5"^†	Gerry Mill	David Ellis and Malcolm Hulke	6 May 1967 (1967-05-06)	KK	7.1	55
			"Episode 6"^†	Gerry Mill	David Ellis and Malcolm Hulke	13 May 1967 (1967-05-13)	KK	8.0	52
36	9	The Evil of the Daleks	"Episode 1"^†	Derek Martinus	David Whitaker	20 May 1967 (1967-05-20)	LL	8.1	51
			"Episode 2"	Derek Martinus	David Whitaker	27 May 1967 (1967-05-27)	LL	7.5	51
			"Episode 3"^†	Derek Martinus	David Whitaker	3 June 1967 (1967-06-03)	LL	6.1	52
			"Episode 4"^†	Derek Martinus	David Whitaker	10 June 1967 (1967-06-10)	LL	5.3	51
			"Episode 5"^†	Derek Martinus	David Whitaker	17 June 1967 (1967-06-17)	LL	5.1	53
			"Episode 6"^†	Derek Martinus	David Whitaker	24 June 1967 (1967-06-24)	LL	6.8	49
			"Episode 7"^†	Derek Martinus	David Whitaker	1 July 1967 (1967-07-01)	LL	6.1	56

^† : Episode is missing

Season 5 (1967–1968) []

This season saw the departure of Watling as Victoria, and the debut appearance of Wendy Padbury as Zoe, and Nicholas Courtney as Colonel Lethbridge-Stewart.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
37	1	The Tomb of the Cybermen	"Episode 1"	Morris Barry	Kit Pedler and Gerry Davis	2 September 1967 (1967-09-02)	MM	6.0	53
			"Episode 2"	Morris Barry	Kit Pedler and Gerry Davis	9 September 1967 (1967-09-09)	MM	6.4	52
			"Episode 3"	Morris Barry	Kit Pedler and Gerry Davis	16 September 1967 (1967-09-16)	MM	7.2	49
			"Episode 4"	Morris Barry	Kit Pedler and Gerry Davis	23 September 1967 (1967-09-23)	MM	7.4	50
38	2	The Abominable Snowmen	"Episode One"^†	Gerald Blake	Mervyn Haisman and Henry Lincoln	30 September 1967 (1967-09-30)	NN	6.3	50
			"Episode Two"	Gerald Blake	Mervyn Haisman and Henry Lincoln	7 October 1967 (1967-10-07)	NN	6.0	52
			"Episode Three"^†	Gerald Blake	Mervyn Haisman and Henry Lincoln	14 October 1967 (1967-10-14)	NN	7.1	51
			"Episode Four"^†	Gerald Blake	Mervyn Haisman and Henry Lincoln	21 October 1967 (1967-10-21)	NN	7.1	50
			"Episode Five"^†	Gerald Blake	Mervyn Haisman and Henry Lincoln	28 October 1967 (1967-10-28)	NN	7.2	51
			"Episode Six"^†	Gerald Blake	Mervyn Haisman and Henry Lincoln	4 November 1967 (1967-11-04)	NN	7.4	52
39	3	The Ice Warriors	"One"	Derek Martinus	Brian Hayles	11 November 1967 (1967-11-11)	OO	6.7	52
			"Two"^†	Derek Martinus	Brian Hayles	18 November 1967 (1967-11-18)	OO	7.1	52
			"Three"^†	Derek Martinus	Brian Hayles	25 November 1967 (1967-11-25)	OO	7.4	51
			"Four"	Derek Martinus	Brian Hayles	2 December 1967 (1967-12-02)	OO	7.3	51
			"Five"	Derek Martinus	Brian Hayles	9 December 1967 (1967-12-09)	OO	8.0	50
			"Six"	Derek Martinus	Brian Hayles	16 December 1967 (1967-12-16)	OO	7.5	51
40	4	The Enemy of the World	"Episode 1"	Barry Letts	David Whitaker	23 December 1967 (1967-12-23)	PP	6.8	50
			"Episode 2"	Barry Letts	David Whitaker	30 December 1967 (1967-12-30)	PP	7.6	49
			"Episode 3"	Barry Letts	David Whitaker	6 January 1968 (1968-01-06)	PP	7.1	48
			"Episode 4"	Barry Letts	David Whitaker	13 January 1968 (1968-01-13)	PP	7.8	49
			"Episode 5"	Barry Letts	David Whitaker	20 January 1968 (1968-01-20)	PP	6.9	49
			"Episode 6"	Barry Letts	David Whitaker	27 January 1968 (1968-01-27)	PP	8.3	52
41	5	The Web of Fear	"Episode 1"	Douglas Camfield	Mervyn Haisman and Henry Lincoln	3 February 1968 (1968-02-03)	QQ	7.2	54
			"Episode 2"	Douglas Camfield	Mervyn Haisman and Henry Lincoln	10 February 1968 (1968-02-10)	QQ	6.8	53
			"Episode 3"^†	Douglas Camfield	Mervyn Haisman and Henry Lincoln	17 February 1968 (1968-02-17)	QQ	7.0	51
			"Episode 4"	Douglas Camfield	Mervyn Haisman and Henry Lincoln	24 February 1968 (1968-02-24)	QQ	8.4	53
			"Episode 5"	Douglas Camfield	Mervyn Haisman and Henry Lincoln	2 March 1968 (1968-03-02)	QQ	8.0	55
			"Episode 6"	Douglas Camfield	Mervyn Haisman and Henry Lincoln	9 March 1968 (1968-03-09)	QQ	8.3	55
42	6	Fury from the Deep	"Episode 1"^†	Hugh David	Victor Pemberton	16 March 1968 (1968-03-16)	RR	8.2	55
			"Episode 2"^†	Hugh David	Victor Pemberton	23 March 1968 (1968-03-23)	RR	7.9	55
			"Episode 3"^†	Hugh David	Victor Pemberton	30 March 1968 (1968-03-30)	RR	7.7	56
			"Episode 4"^†	Hugh David	Victor Pemberton	6 April 1968 (1968-04-06)	RR	6.6	56
			"Episode 5"^†	Hugh David	Victor Pemberton	13 April 1968 (1968-04-13)	RR	5.9	56
			"Episode 6"^†	Hugh David	Victor Pemberton	20 April 1968 (1968-04-20)	RR	6.9	57
43	7	The Wheel in Space	"Episode 1"^†	Tristan DeVere Cole	David Whitaker and Kit Pedler (story)	27 April 1968 (1968-04-27)	SS	7.2	57
			"Episode 2"^†	Tristan DeVere Cole	David Whitaker and Kit Pedler (story)	4 May 1968 (1968-05-04)	SS	6.9	60
			"Episode 3"	Tristan DeVere Cole	David Whitaker and Kit Pedler (story)	11 May 1968 (1968-05-11)	SS	7.5	55
			"Episode 4"^†	Tristan DeVere Cole	David Whitaker and Kit Pedler (story)	18 May 1968 (1968-05-18)	SS	8.6	56
			"Episode 5"^†	Tristan DeVere Cole	David Whitaker and Kit Pedler (story)	25 May 1968 (1968-05-25)	SS	6.8	57
			"Episode 6"	Tristan DeVere Cole	David Whitaker and Kit Pedler (story)	1 June 1968 (1968-06-01)	SS	6.5	62

^† : Episode is missing

Season 6 (1968–1969) []

Hines and Padbury both departed in The War Games, alongside Troughton. It was the show's last season to be filmed in black and white.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
44	1	The Dominators	"Episode 1"	Morris Barry	Norman Ashby (Mervyn Haisman and Henry Lincoln)	10 August 1968 (1968-08-10)	TT	6.1	52
			"Episode 2"	Morris Barry	Norman Ashby (Mervyn Haisman and Henry Lincoln)	17 August 1968 (1968-08-17)	TT	5.9	55
			[Episode 3]^{[note 1]}	Morris Barry	Norman Ashby (Mervyn Haisman and Henry Lincoln)	24 August 1968 (1968-08-24)	TT	5.4	55
			"Episode 4"	Morris Barry	Norman Ashby (Mervyn Haisman and Henry Lincoln)	31 August 1968 (1968-08-31)	TT	7.5	51
			"Episode 5"	Morris Barry	Norman Ashby (Mervyn Haisman and Henry Lincoln)	7 September 1968 (1968-09-07)	TT	5.9	53
45	2	The Mind Robber	"Episode 1"	David Maloney	Derrick Sherwin	14 September 1968 (1968-09-14)	UU	6.6	51
			"Episode 2"	David Maloney	Peter Ling	21 September 1968 (1968-09-21)	UU	6.5	49
			"Episode 3"	David Maloney	Peter Ling	28 September 1968 (1968-09-28)	UU	7.2	53
			"Episode 4"	David Maloney	Peter Ling	5 October 1968 (1968-10-05)	UU	7.3	56
			"Episode 5"	David Maloney	Peter Ling	12 October 1968 (1968-10-12)	UU	6.7	49
46	3	The Invasion	"Episode One"^†	Douglas Camfield	Derrick Sherwin and Kit Pedler (story)	2 November 1968 (1968-11-02)	VV	7.3	55
			"Episode "Two"	Douglas Camfield	Derrick Sherwin and Kit Pedler (story)	9 November 1968 (1968-11-09)	VV	7.1	53
			"Episode Three"	Douglas Camfield	Derrick Sherwin and Kit Pedler (story)	16 November 1968 (1968-11-16)	VV	7.1	54
			"Episode Four"^†	Douglas Camfield	Derrick Sherwin and Kit Pedler (story)	23 November 1968 (1968-11-23)	VV	6.4	51
			"Episode Five"	Douglas Camfield	Derrick Sherwin and Kit Pedler (story)	30 November 1968 (1968-11-30)	VV	6.7	52
			"Episode Six"	Douglas Camfield	Derrick Sherwin and Kit Pedler (story)	7 December 1968 (1968-12-07)	VV	6.5	56
			"Episode Seven"	Douglas Camfield	Derrick Sherwin and Kit Pedler (story)	14 December 1968 (1968-12-14)	VV	7.2	55
			"Episode Eight"	Douglas Camfield	Derrick Sherwin and Kit Pedler (story)	21 December 1968 (1968-12-21)	VV	7.0	53
47	4	The Krotons	"Episode One"	David Maloney	Robert Holmes	28 December 1968 (1968-12-28)	WW	9.0	59
			"Episode Two"	David Maloney	Robert Holmes	4 January 1969 (1969-01-04)	WW	8.4	57
			"Episode Three"	David Maloney	Robert Holmes	11 January 1969 (1969-01-11)	WW	7.5	56
			"Episode Four"	David Maloney	Robert Holmes	18 January 1969 (1969-01-18)	WW	7.1	55
48	5	The Seeds of Death	"Episode One"	Michael Ferguson	Brian Hayles	25 January 1969 (1969-01-25)	XX	6.6	57
			"Episode Two"	Michael Ferguson	Brian Hayles	1 February 1969 (1969-02-01)	XX	6.8	59
			"Episode Three"	Michael Ferguson	Brian Hayles and Terrance Dicks (uncredited)	8 February 1969 (1969-02-08)	XX	7.5	55
			"Episode Four"	Michael Ferguson	Brian Hayles and Terrance Dicks (uncredited)	15 February 1969 (1969-02-15)	XX	7.1	55
			"Episode Five"	Michael Ferguson	Brian Hayles and Terrance Dicks (uncredited)	22 February 1969 (1969-02-22)	XX	7.6	57
			"Episode Six"	Michael Ferguson	Brian Hayles and Terrance Dicks (uncredited)	1 March 1969 (1969-03-01)	XX	7.7	59
49	6	The Space Pirates	"Episode One"^†	Michael Hart	Robert Holmes	8 March 1969 (1969-03-08)	YY	5.8	57
			"Episode Two"	Michael Hart	Robert Holmes	15 March 1969 (1969-03-15)	YY	6.8	52
			"Episode Three"^†	Michael Hart	Robert Holmes	22 March 1969 (1969-03-22)	YY	6.4	55
			"Episode Four"^†	Michael Hart	Robert Holmes	29 March 1969 (1969-03-29)	YY	5.8	53
			"Episode Five"^†	Michael Hart	Robert Holmes	5 April 1969 (1969-04-05)	YY	5.5	56
			"Episode Six"^†	Michael Hart	Robert Holmes	12 April 1969 (1969-04-12)	YY	5.3	52
50	7	The War Games	"Episode One"	David Maloney	Terrance Dicks and Malcolm Hulke	19 April 1969 (1969-04-19)	ZZ	5.5	55
			"Episode Two"	David Maloney	Terrance Dicks and Malcolm Hulke	26 April 1969 (1969-04-26)	ZZ	6.3	54
			"Episode Three"	David Maloney	Terrance Dicks and Malcolm Hulke	3 May 1969 (1969-05-03)	ZZ	5.1	53
			"Episode Four"	David Maloney	Terrance Dicks and Malcolm Hulke	10 May 1969 (1969-05-10)	ZZ	5.7	50
			"Episode Five"	David Maloney	Terrance Dicks and Malcolm Hulke	17 May 1969 (1969-05-17)	ZZ	5.1	53
			"Episode Six"	David Maloney	Terrance Dicks and Malcolm Hulke	24 May 1969 (1969-05-24)	ZZ	4.2	53
			"Episode Seven"	David Maloney	Terrance Dicks and Malcolm Hulke	31 May 1969 (1969-05-31)	ZZ	4.9	53
			"Episode Eight"	David Maloney	Terrance Dicks and Malcolm Hulke	7 June 1969 (1969-06-07)	ZZ	3.5	53
			"Episode Nine"	David Maloney	Terrance Dicks and Malcolm Hulke	14 June 1969 (1969-06-14)	ZZ	4.1	57
			"Episode Ten"	David Maloney	Terrance Dicks and Malcolm Hulke	21 June 1969 (1969-06-21)	ZZ	5.0	58

^† : Episode is missing

Third Doctor[]

The Third Doctor was portrayed by Jon Pertwee. Sentenced to exile on Earth and forcibly regenerated at the end of The War Games, the Doctor spent his time working for UNIT (United Nations Intelligence Taskforce). After The Three Doctors, the Time Lords repealed his exile; however, the Doctor still worked closely with UNIT from time to time. The Third Doctor regenerated into his fourth incarnation as a result of radiation poisoning in the last moments of Planet of the Spiders.

Season 7 (1970)[]

From this season onwards the programme was produced in colour. To accommodate the new production methods the number of episodes in a season was cut: season 6 has 44 episodes; season 7 has 25 episodes. The seasons continued to have between 20 and 28 episodes until season 22. This season featured companion Liz Shaw.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
51	1	Spearhead from Space	"Episode 1"	Derek Martinus	Robert Holmes	3 January 1970 (1970-01-03)	AAA	8.4	54
			"Episode 2"	Derek Martinus	Robert Holmes	10 January 1970 (1970-01-10)	AAA	8.1	—
			"Episode 3"	Derek Martinus	Robert Holmes	17 January 1970 (1970-01-17)	AAA	8.3	—
			"Episode 4"	Derek Martinus	Robert Holmes	24 January 1970 (1970-01-24)	AAA	8.1	57
52	2	Doctor Who and the Silurians	"Episode 1"	Timothy Combe	Malcolm Hulke	31 January 1970 (1970-01-31)	BBB	8.8	58
			"Episode 2"	Timothy Combe	Malcolm Hulke	7 February 1970 (1970-02-07)	BBB	7.3	58
			"Episode 3"	Timothy Combe	Malcolm Hulke	14 February 1970 (1970-02-14)	BBB	7.5	57
			"Episode 4"	Timothy Combe	Malcolm Hulke	21 February 1970 (1970-02-21)	BBB	8.2	60
			"Episode 5"	Timothy Combe	Malcolm Hulke	28 February 1970 (1970-02-28)	BBB	7.5	58
			"Episode 6"	Timothy Combe	Malcolm Hulke	7 March 1970 (1970-03-07)	BBB	7.2	57
			"Episode 7"	Timothy Combe	Malcolm Hulke	14 March 1970 (1970-03-14)	BBB	7.5	58
53	3	The Ambassadors of Death	"Episode 1"	Michael Ferguson	David Whitaker and Trevor Ray (uncredited)	21 March 1970 (1970-03-21)	CCC	7.1	60
			"Episode 2"	Michael Ferguson	David Whitaker, Malcolm Hulke (uncredited), and Terrance Dicks (uncredited)	28 March 1970 (1970-03-28)	CCC	7.6	61
			"Episode 3"	Michael Ferguson	David Whitaker, Malcolm Hulke (uncredited), and Terrance Dicks (uncredited)	4 April 1970 (1970-04-04)	CCC	8.0	59
			"Episode 4"	Michael Ferguson	David Whitaker, Malcolm Hulke (uncredited), and Terrance Dicks (uncredited)	11 April 1970 (1970-04-11)	CCC	9.3	58
			"Episode 5"	Michael Ferguson	David Whitaker, Malcolm Hulke (uncredited), and Terrance Dicks (uncredited)	18 April 1970 (1970-04-18)	CCC	7.1	—
			"Episode 6"	Michael Ferguson	David Whitaker, Malcolm Hulke (uncredited), and Terrance Dicks (uncredited)	25 April 1970 (1970-04-25)	CCC	6.9	61
			"Episode 7"	Michael Ferguson	David Whitaker, Malcolm Hulke (uncredited), and Terrance Dicks (uncredited)	2 May 1970 (1970-05-02)	CCC	6.4	62
54	4	Inferno	"Episode 1"	Douglas Camfield	Don Houghton	9 May 1970 (1970-05-09)	DDD	5.7	61
			"Episode 2"	Douglas Camfield	Don Houghton	16 May 1970 (1970-05-16)	DDD	5.9	61
			"Episode 3"	Douglas Camfield and Barry Letts (uncredited)	Don Houghton	23 May 1970 (1970-05-23)	DDD	4.8	60
			"Episode 4"	Douglas Camfield and Barry Letts (uncredited)	Don Houghton	30 May 1970 (1970-05-30)	DDD	6.0	60
			"Episode 5"	Douglas Camfield and Barry Letts (uncredited)	Don Houghton	6 June 1970 (1970-06-06)	DDD	5.4	—
			"Episode 6"	Douglas Camfield and Barry Letts (uncredited)	Don Houghton	13 June 1970 (1970-06-13)	DDD	6.7	58
			"Episode 7"	Douglas Camfield and Barry Letts (uncredited)	Don Houghton	20 June 1970 (1970-06-20)	DDD	5.5	60

Season 8 (1971)[]

This season forms a loose arc with the introduction of the Master, the villain in each of the season's storylines, and introduces the companion Jo Grant portrayed by Katy Manning.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
55	1	Terror of the Autons	"Episode One"	Barry Letts	Robert Holmes	2 January 1971 (1971-01-02)	EEE	7.3	—
			"Episode Two"	Barry Letts	Robert Holmes	9 January 1971 (1971-01-09)	EEE	8.0	—
			"Episode Three"	Barry Letts	Robert Holmes	16 January 1971 (1971-01-16)	EEE	8.1	—
			"Episode Four"	Barry Letts	Robert Holmes	23 January 1971 (1971-01-23)	EEE	8.4	—
56	2	The Mind of Evil	"Episode One"	Timothy Combe	Don Houghton	30 January 1971 (1971-01-30)	FFF	6.1	—
			"Episode Two"	Timothy Combe	Don Houghton	6 February 1971 (1971-02-06)	FFF	8.8	—
			"Episode Three"	Timothy Combe	Don Houghton	13 February 1971 (1971-02-13)	FFF	7.5	—
			"Episode Four"	Timothy Combe	Don Houghton	20 February 1971 (1971-02-20)	FFF	7.4	—
			"Episode Five"	Timothy Combe	Don Houghton	27 February 1971 (1971-02-27)	FFF	7.6	—
			"Episode Six"	Timothy Combe	Don Houghton	6 March 1971 (1971-03-06)	FFF	7.3	—
57	3	The Claws of Axos	"Episode One"	Michael Ferguson	Bob Baker and Dave Martin	13 March 1971 (1971-03-13)	GGG	7.3	—
			"Episode Two"	Michael Ferguson	Bob Baker and Dave Martin	20 March 1971 (1971-03-20)	GGG	8.0	—
			"Episode Three"	Michael Ferguson	Bob Baker and Dave Martin	27 March 1971 (1971-03-27)	GGG	6.4	—
			"Episode Four"	Michael Ferguson	Bob Baker and Dave Martin	3 April 1971 (1971-04-03)	GGG	7.8	—
58	4	Colony in Space	"Episode One"	Michael E. Briant	Malcolm Hulke	10 April 1971 (1971-04-10)	HHH	7.6	—
			"Episode Two"	Michael E. Briant	Malcolm Hulke	17 April 1971 (1971-04-17)	HHH	8.5	—
			"Episode Three"	Michael E. Briant	Malcolm Hulke	24 April 1971 (1971-04-24)	HHH	9.5	—
			"Episode Four"	Michael E. Briant	Malcolm Hulke	1 May 1971 (1971-05-01)	HHH	8.1	—
			"Episode Five"	Michael E. Briant	Malcolm Hulke	8 May 1971 (1971-05-08)	HHH	8.8	—
			"Episode Six"	Michael E. Briant	Malcolm Hulke	15 May 1971 (1971-05-15)	HHH	8.7	—
59	5	The Dæmons	"Episode One"	Christopher Barry	Guy Leopold (Robert Sloman and Barry Letts)	22 May 1971 (1971-05-22)	JJJ	9.2	—
			"Episode Two"	Christopher Barry	Guy Leopold (Robert Sloman and Barry Letts)	29 May 1971 (1971-05-29)	JJJ	8.0	—
			"Episode Three"	Christopher Barry	Guy Leopold (Robert Sloman and Barry Letts)	5 June 1971 (1971-06-05)	JJJ	8.1	—
			"Episode Four"	Christopher Barry	Guy Leopold (Robert Sloman and Barry Letts)	12 June 1971 (1971-06-12)	JJJ	8.1	—
			"Episode Five"	Christopher Barry	Guy Leopold (Robert Sloman and Barry Letts)	19 June 1971 (1971-06-19)	JJJ	8.3	—

Season 9 (1972)[]

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
60	1	Day of the Daleks	"Episode One"	Paul Bernard	Louis Marks	1 January 1972 (1972-01-01)	KKK	9.8	—
			"Episode Two"	Paul Bernard	Louis Marks	8 January 1972 (1972-01-08)	KKK	10.4	—
			"Episode Three"	Paul Bernard	Louis Marks	15 January 1972 (1972-01-15)	KKK	9.1	—
			"Episode Four"	Paul Bernard	Louis Marks	22 January 1972 (1972-01-22)	KKK	9.1	—
61	2	The Curse of Peladon	"Episode One"	Lennie Mayne	Brian Hayles	29 January 1972 (1972-01-29)	MMM	10.3	—
			"Episode Two"	Lennie Mayne	Brian Hayles	5 February 1972 (1972-02-05)	MMM	11.0	—
			"Episode Three"	Lennie Mayne	Brian Hayles	12 February 1972 (1972-02-12)	MMM	7.8	—
			"Episode Four"	Lennie Mayne	Brian Hayles	19 February 1972 (1972-02-19)	MMM	8.4	—
62	3	The Sea Devils	"Episode One"	Michael E. Briant	Malcolm Hulke	26 February 1972 (1972-02-26)	LLL	6.4	—
			"Episode Two"	Michael E. Briant	Malcolm Hulke	4 March 1972 (1972-03-04)	LLL	9.7	—
			"Episode Three"	Michael E. Briant	Malcolm Hulke	11 March 1972 (1972-03-11)	LLL	8.3	—
			"Episode Four"	Michael E. Briant	Malcolm Hulke	18 March 1972 (1972-03-18)	LLL	7.8	—
			"Episode Five"	Michael E. Briant	Malcolm Hulke	25 March 1972 (1972-03-25)	LLL	8.3	—
			"Episode Six"	Michael E. Briant	Malcolm Hulke	1 April 1972 (1972-04-01)	LLL	8.5	—
63	4	The Mutants	"Episode One"	Christopher Barry	Bob Baker and Dave Martin	8 April 1972 (1972-04-08)	NNN	9.1	—
			"Episode Two"	Christopher Barry	Bob Baker and Dave Martin	15 April 1972 (1972-04-15)	NNN	7.8	—
			"Episode Three"	Christopher Barry	Bob Baker and Dave Martin	22 April 1972 (1972-04-22)	NNN	7.9	—
			"Episode Four"	Christopher Barry	Bob Baker and Dave Martin	29 April 1972 (1972-04-29)	NNN	7.5	—
			"Episode Five"	Christopher Barry	Bob Baker and Dave Martin	6 May 1972 (1972-05-06)	NNN	7.9	—
			"Episode Six"	Christopher Barry	Bob Baker and Dave Martin	13 May 1972 (1972-05-13)	NNN	6.5	—
64	5	The Time Monster	"Episode One"	Paul Bernard	Robert Sloman and Barry Letts (uncredited)	20 May 1972 (1972-05-20)	OOO	7.6	—
			"Episode Two"	Paul Bernard	Robert Sloman and Barry Letts (uncredited)	27 May 1972 (1972-05-27)	OOO	7.4	—
			"Episode Three"	Paul Bernard	Robert Sloman and Barry Letts (uncredited)	3 June 1972 (1972-06-03)	OOO	8.1	—
			"Episode Four"	Paul Bernard	Robert Sloman and Barry Letts (uncredited)	10 June 1972 (1972-06-10)	OOO	7.6	—
			"Episode Five"	Paul Bernard	Robert Sloman and Barry Letts (uncredited)	17 June 1972 (1972-06-17)	OOO	6.0	—
			"Episode Six"	Paul Bernard	Robert Sloman and Barry Letts (uncredited)	24 June 1972 (1972-06-24)	OOO	7.6	—

Season 10 (1972–1973) []

This season marked the final appearance of companion Jo Grant and the end of the Doctor's exile on Earth.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
65	1	The Three Doctors	"Episode One"	Lennie Mayne	Bob Baker and Dave Martin	30 December 1972 (1972-12-30)	RRR	9.6	—
			"Episode Two"	Lennie Mayne	Bob Baker and Dave Martin	6 January 1973 (1973-01-06)	RRR	10.8	—
			"Episode Three"	Lennie Mayne	Bob Baker and Dave Martin	13 January 1973 (1973-01-13)	RRR	8.8	—
			"Episode Four"	Lennie Mayne	Bob Baker and Dave Martin	20 January 1973 (1973-01-20)	RRR	11.9	—
66	2	Carnival of Monsters	"Episode One"	Barry Letts	Robert Holmes	27 January 1973 (1973-01-27)	PPP	9.5	—
			"Episode Two"	Barry Letts	Robert Holmes	3 February 1973 (1973-02-03)	PPP	9.0	—
			"Episode Three"	Barry Letts	Robert Holmes	10 February 1973 (1973-02-10)	PPP	9.0	—
			"Episode Four"	Barry Letts	Robert Holmes	17 February 1973 (1973-02-17)	PPP	9.2	—
67	3	Frontier in Space	"Episode One"	Paul Bernard	Malcolm Hulke	24 February 1973 (1973-02-24)	QQQ	9.1	—
			"Episode Two"	Paul Bernard	Malcolm Hulke	3 March 1973 (1973-03-03)	QQQ	7.8	—
			"Episode Three"	Paul Bernard	Malcolm Hulke	10 March 1973 (1973-03-10)	QQQ	7.5	—
			"Episode Four"	Paul Bernard	Malcolm Hulke	17 March 1973 (1973-03-17)	QQQ	7.1	—
			"Episode Five"	Paul Bernard	Malcolm Hulke	24 March 1973 (1973-03-24)	QQQ	7.7	—
			"Episode Six"	Paul Bernard	Malcolm Hulke	31 March 1973 (1973-03-31)	QQQ	8.9	—
68	4	Planet of the Daleks	"Episode One"	David Maloney	Terry Nation	7 April 1973 (1973-04-07)	SSS	11.0	—
			"Episode Two"	David Maloney	Terry Nation	14 April 1973 (1973-04-14)	SSS	10.7	—
			"Episode Three"	David Maloney	Terry Nation	21 April 1973 (1973-04-21)	SSS	10.1	—
			"Episode Four"	David Maloney	Terry Nation	28 April 1973 (1973-04-28)	SSS	8.3	—
			"Episode Five"	David Maloney	Terry Nation	5 May 1973 (1973-05-05)	SSS	9.7	—
			"Episode Six"	David Maloney	Terry Nation	12 May 1973 (1973-05-12)	SSS	8.5	—
69	5	The Green Death	"Episode One"	Michael E. Briant	Robert Sloman and Barry Letts (uncredited)	19 May 1973 (1973-05-19)	TTT	9.2	—
			"Episode Two"	Michael E. Briant	Robert Sloman and Barry Letts (uncredited)	26 May 1973 (1973-05-26)	TTT	7.2	—
			"Episode Three"	Michael E. Briant	Robert Sloman and Barry Letts (uncredited)	2 June 1973 (1973-06-02)	TTT	7.8	—
			"Episode Four"	Michael E. Briant	Robert Sloman and Barry Letts (uncredited)	9 June 1973 (1973-06-09)	TTT	6.8	—
			"Episode Five"	Michael E. Briant	Robert Sloman and Barry Letts (uncredited)	16 June 1973 (1973-06-16)	TTT	8.3	—
			"Episode Six"	Michael E. Briant	Robert Sloman and Barry Letts (uncredited)	23 June 1973 (1973-06-23)	TTT	7.0	—

Season 11 (1973–1974) []

This season introduces the companion Sarah Jane Smith portrayed by Elisabeth Sladen.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
70	1	The Time Warrior	"Part One"	Alan Bromly	Robert Holmes	15 December 1973 (1973-12-15)	UUU	8.7	59
			"Part Two"	Alan Bromly	Robert Holmes	22 December 1973 (1973-12-22)	UUU	7.0	—
			"Part Three"	Alan Bromly	Robert Holmes	29 December 1973 (1973-12-29)	UUU	6.6	—
			"Part Four"	Alan Bromly	Robert Holmes	5 January 1974 (1974-01-05)	UUU	10.6	60
71	2	Invasion of the Dinosaurs	"Part One"	Paddy Russell	Malcolm Hulke	12 January 1974 (1974-01-12)	WWW	11.0	62
			"Part Two"	Paddy Russell	Malcolm Hulke	19 January 1974 (1974-01-19)	WWW	10.1	—
			"Part Three"	Paddy Russell	Malcolm Hulke	26 January 1974 (1974-01-26)	WWW	11.0	63
			"Part Four"	Paddy Russell	Malcolm Hulke	2 February 1974 (1974-02-02)	WWW	9.0	—
			"Part Five"	Paddy Russell	Malcolm Hulke	9 February 1974 (1974-02-09)	WWW	9.0	—
			"Part Six"	Paddy Russell	Malcolm Hulke	16 February 1974 (1974-02-16)	WWW	7.5	62
72	3	Death to the Daleks	"Part One"	Michael E. Briant	Terry Nation	23 February 1974 (1974-02-23)	XXX	8.1	61
			"Part Two"	Michael E. Briant	Terry Nation	2 March 1974 (1974-03-02)	XXX	9.5	—
			"Part Three"	Michael E. Briant	Terry Nation	9 March 1974 (1974-03-09)	XXX	10.5	61
			"Part Four"	Michael E. Briant	Terry Nation	16 March 1974 (1974-03-16)	XXX	9.5	62
73	4	The Monster of Peladon	"Part One"	Lennie Mayne	Brian Hayles	23 March 1974 (1974-03-23)	YYY	9.2	—
			"Part Two"	Lennie Mayne	Brian Hayles	30 March 1974 (1974-03-30)	YYY	6.8	—
			"Part Three"	Lennie Mayne	Brian Hayles	6 April 1974 (1974-04-06)	YYY	7.4	—
			"Part Four"	Lennie Mayne	Brian Hayles	13 April 1974 (1974-04-13)	YYY	7.2	—
			"Part Five"	Lennie Mayne	Brian Hayles	20 April 1974 (1974-04-20)	YYY	7.5	—
			"Part Six"	Lennie Mayne	Brian Hayles	27 April 1974 (1974-04-27)	YYY	8.1	—
74	5	Planet of the Spiders	"Part One"	Barry Letts	Robert Sloman and Barry Letts (uncredited)	4 May 1974 (1974-05-04)	ZZZ	10.1	58
			"Part Two"	Barry Letts	Robert Sloman and Barry Letts (uncredited)	11 May 1974 (1974-05-11)	ZZZ	8.9	60
			"Part Three"	Barry Letts	Robert Sloman and Barry Letts (uncredited)	18 May 1974 (1974-05-18)	ZZZ	8.8	57
			"Part Four"	Barry Letts	Robert Sloman and Barry Letts (uncredited)	25 May 1974 (1974-05-25)	ZZZ	8.2	—
			"Part Five"	Barry Letts	Robert Sloman and Barry Letts (uncredited)	1 June 1974 (1974-06-01)	ZZZ	9.2	—
			"Part Six"	Barry Letts	Robert Sloman and Barry Letts (uncredited)	8 June 1974 (1974-06-08)	ZZZ	8.9	56

Fourth Doctor[]

The Fourth Doctor was portrayed by Tom Baker. He is, to date, the actor who has played the Doctor on television for the longest period of time,^[11] having held the role for seven seasons.

Season 12 (1974–1975) []

All serials in this season continue directly one after the other, tracing one single problematic voyage of the TARDIS crew. Despite the continuity, each serial is considered its own standalone story. This season also introduced the character of Harry Sullivan portrayed by Ian Marter as a companion; this character was intended to undertake action scenes, during the period prior to Tom Baker being cast, when it was unclear how old the actor playing the new Doctor would be.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
75	1	Robot	"Part One"	Christopher Barry	Terrance Dicks	28 December 1974 (1974-12-28)	4A	10.8	53
			"Part Two"	Christopher Barry	Terrance Dicks	4 January 1975 (1975-01-04)	4A	10.7	53
			"Part Three"	Christopher Barry	Terrance Dicks	11 January 1975 (1975-01-11)	4A	10.1	—
			"Part Four"	Christopher Barry	Terrance Dicks	18 January 1975 (1975-01-18)	4A	9.0	51
76	2	The Ark in Space	"Part One"	Rodney Bennett	Robert Holmes	25 January 1975 (1975-01-25)	4C	9.4	—
			"Part Two"	Rodney Bennett	Robert Holmes	1 February 1975 (1975-02-01)	4C	13.6	—
			"Part Three"	Rodney Bennett	Robert Holmes	8 February 1975 (1975-02-08)	4C	11.2	—
			"Part Four"	Rodney Bennett	Robert Holmes	15 February 1975 (1975-02-15)	4C	10.2	—
77	3	The Sontaran Experiment	"Part One"	Rodney Bennett	Bob Baker and Dave Martin	22 February 1975 (1975-02-22)	4B	11.0	—
77	3	The Sontaran Experiment	"Part Two"	Rodney Bennett	Bob Baker and Dave Martin	1 March 1975 (1975-03-01)	4B	10.5	55
78	4	Genesis of the Daleks	"Part One"	David Maloney	Terry Nation	8 March 1975 (1975-03-08)	4E	10.7	—
			"Part Two"	David Maloney	Terry Nation	15 March 1975 (1975-03-15)	4E	10.5	57
			"Part Three"	David Maloney	Terry Nation	22 March 1975 (1975-03-22)	4E	8.5	—
			"Part Four"	David Maloney	Terry Nation	29 March 1975 (1975-03-29)	4E	8.8	58
			"Part Five"	David Maloney	Terry Nation	5 April 1975 (1975-04-05)	4E	9.8	57
			"Part Six"	David Maloney	Terry Nation	12 April 1975 (1975-04-12)	4E	9.1	56
79	5	Revenge of the Cybermen	"Part One"	Michael E. Briant	Gerry Davis	19 April 1975 (1975-04-19)	4D	9.5	57
			"Part Two"	Michael E. Briant	Gerry Davis	26 April 1975 (1975-04-26)	4D	8.3	—
			"Part Three"	Michael E. Briant	Gerry Davis	3 May 1975 (1975-05-03)	4D	8.9	—
			"Part Four"	Michael E. Briant	Gerry Davis	10 May 1975 (1975-05-10)	4D	9.4	58

Season 13 (1975–1976) []

During this season, Ian Marter (Harry Sullivan) left after Terror of the Zygons, but returned for a guest appearance in The Android Invasion. Terror of the Zygons also saw the last semi-regular appearance of Nicholas Courtney (Brigadier Lethbridge-Stewart) who did not return until Season 20 in Mawdryn Undead.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
80	1	Terror of the Zygons	"Part One"	Douglas Camfield	Robert Banks Stewart	30 August 1975 (1975-08-30)	4F	8.4	59
			"Part Two"	Douglas Camfield	Robert Banks Stewart	6 September 1975 (1975-09-06)	4F	6.1	—
			"Part Three"	Douglas Camfield	Robert Banks Stewart	13 September 1975 (1975-09-13)	4F	8.2	54
			"Part Four"	Douglas Camfield	Robert Banks Stewart	20 September 1975 (1975-09-20)	4F	7.2	—
81	2	Planet of Evil	"Part One"	David Maloney	Louis Marks	27 September 1975 (1975-09-27)	4H	10.4	—
			"Part Two"	David Maloney	Louis Marks	4 October 1975 (1975-10-04)	4H	9.9	56
			"Part Three"	David Maloney	Louis Marks	11 October 1975 (1975-10-11)	4H	9.1	57
			"Part Four"	David Maloney	Louis Marks	18 October 1975 (1975-10-18)	4H	10.1	54
82	3	Pyramids of Mars	"Part One"	Paddy Russell	Stephen Harris (Lewis Greifer and Robert Holmes)	25 October 1975 (1975-10-25)	4G	10.5	—
			"Part Two"	Paddy Russell	Stephen Harris (Lewis Greifer and Robert Holmes)	1 November 1975 (1975-11-01)	4G	11.3	—
			"Part Three"	Paddy Russell	Stephen Harris (Lewis Greifer and Robert Holmes)	8 November 1975 (1975-11-08)	4G	9.4	—
			"Part Four"	Paddy Russell	Stephen Harris (Lewis Greifer and Robert Holmes)	15 November 1975 (1975-11-15)	4G	11.7	60
83	4	The Android Invasion	"Part One"	Barry Letts	Terry Nation	22 November 1975 (1975-11-22)	4J	11.9	58
			"Part Two"	Barry Letts	Terry Nation	29 November 1975 (1975-11-29)	4J	11.3	—
			"Part Three"	Barry Letts	Terry Nation	6 December 1975 (1975-12-06)	4J	12.1	—
			"Part Four"	Barry Letts	Terry Nation	13 December 1975 (1975-12-13)	4J	11.4	—
84	5	The Brain of Morbius	"Part One"	Christopher Barry	Robin Bland (Terrance Dicks and Robert Holmes)	3 January 1976 (1976-01-03)	4K	9.5	—
			"Part Two"	Christopher Barry	Robin Bland (Terrance Dicks and Robert Holmes)	10 January 1976 (1976-01-10)	4K	9.3	—
			"Part Three"	Christopher Barry	Robin Bland (Terrance Dicks and Robert Holmes)	17 January 1976 (1976-01-17)	4K	10.1	57
			"Part Four"	Christopher Barry	Robin Bland (Terrance Dicks and Robert Holmes)	24 January 1976 (1976-01-24)	4K	10.2	—
85	6	The Seeds of Doom	"Part One"	Douglas Camfield	Robert Banks Stewart	31 January 1976 (1976-01-31)	4L	11.4	59
			"Part Two"	Douglas Camfield	Robert Banks Stewart	7 February 1976 (1976-02-07)	4L	11.4	—
			"Part Three"	Douglas Camfield	Robert Banks Stewart	14 February 1976 (1976-02-14)	4L	10.3	—
			"Part Four"	Douglas Camfield	Robert Banks Stewart	21 February 1976 (1976-02-21)	4L	11.1	—
			"Part Five"	Douglas Camfield	Robert Banks Stewart	28 February 1976 (1976-02-28)	4L	9.9	—
			"Part Six"	Douglas Camfield	Robert Banks Stewart	6 March 1976 (1976-03-06)	4L	11.5	—

Season 14 (1976–1977) []

Elisabeth Sladen (Sarah Jane Smith) left the series this season in The Hand of Fear and was replaced by Louise Jameson (Leela) in The Face of Evil . The season also saw the first story in which the Doctor did not have a companion, The Deadly Assassin.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
86	1	The Masque of Mandragora	"Part One"	Rodney Bennett	Louis Marks	4 September 1976 (1976-09-04)	4M	8.3	58
			"Part Two"	Rodney Bennett	Louis Marks	11 September 1976 (1976-09-11)	4M	9.8	56
			"Part Three"	Rodney Bennett	Louis Marks	18 September 1976 (1976-09-18)	4M	9.2	—
			"Part Four"	Rodney Bennett	Louis Marks	25 September 1976 (1976-09-25)	4M	10.6	56
87	2	The Hand of Fear	"Part One"	Lennie Mayne	Bob Baker and Dave Martin	2 October 1976 (1976-10-02)	4N	10.5	—
			"Part Two"	Lennie Mayne	Bob Baker and Dave Martin	9 October 1976 (1976-10-09)	4N	10.2	—
			"Part Three"	Lennie Mayne	Bob Baker and Dave Martin	16 October 1976 (1976-10-16)	4N	11.1	62
			"Part Four"	Lennie Mayne	Bob Baker and Dave Martin	23 October 1976 (1976-10-23)	4N	12.0	—
88	3	The Deadly Assassin	"Part One"	David Maloney	Robert Holmes	30 October 1976 (1976-10-30)	4P	11.8	—
			"Part Two"	David Maloney	Robert Holmes	6 November 1976 (1976-11-06)	4P	12.1	59
			"Part Three"	David Maloney	Robert Holmes	13 November 1976 (1976-11-13)	4P	13.0	—
			"Part Four"	David Maloney	Robert Holmes	20 November 1976 (1976-11-20)	4P	11.8	61
89	4	The Face of Evil	"Part One"	Pennant Roberts	Chris Boucher	1 January 1977 (1977-01-01)	4Q	10.7	61
			"Part Two"	Pennant Roberts	Chris Boucher	8 January 1977 (1977-01-08)	4Q	11.1	—
			"Part Three"	Pennant Roberts	Chris Boucher	15 January 1977 (1977-01-15)	4Q	11.3	59
			"Part Four"	Pennant Roberts	Chris Boucher	22 January 1977 (1977-01-22)	4Q	11.7	60
90	5	The Robots of Death	"Part One"	Michael E. Briant	Chris Boucher	29 January 1977 (1977-01-29)	4R	12.8	62
			"Part Two"	Michael E. Briant	Chris Boucher	5 February 1977 (1977-02-05)	4R	12.4	—
			"Part Three"	Michael E. Briant	Chris Boucher	12 February 1977 (1977-02-12)	4R	13.1	—
			"Part Four"	Michael E. Briant	Chris Boucher	19 February 1977 (1977-02-19)	4R	12.6	57
91	6	The Talons of Weng-Chiang	"Part One"	David Maloney	Robert Holmes	26 February 1977 (1977-02-26)	4S	11.3	—
			"Part Two"	David Maloney	Robert Holmes	5 March 1977 (1977-03-05)	4S	9.8	—
			"Part Three"	David Maloney	Robert Holmes	12 March 1977 (1977-03-12)	4S	10.2	—
			"Part Four"	David Maloney	Robert Holmes	19 March 1977 (1977-03-19)	4S	11.4	60
			"Part Five"	David Maloney	Robert Holmes	26 March 1977 (1977-03-26)	4S	10.1	—
			"Part Six"	David Maloney	Robert Holmes	2 April 1977 (1977-04-02)	4S	9.3	58

Season 15 (1977–1978) []

This season saw the final appearance of Leela and the first appearance of K9 as voiced by John Leeson.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
92	1	Horror of Fang Rock	"Part One"	Paddy Russell	Terrance Dicks	3 September 1977 (1977-09-03)	4V	6.8	58
			"Part Two"	Paddy Russell	Terrance Dicks	10 September 1977 (1977-09-10)	4V	7.1	—
			"Part Three"	Paddy Russell	Terrance Dicks	17 September 1977 (1977-09-17)	4V	9.8	60
			"Part Four"	Paddy Russell	Terrance Dicks	24 September 1977 (1977-09-24)	4V	9.9	57
93	2	The Invisible Enemy	"Part One"	Derrick Goodwin	Bob Baker and Dave Martin	1 October 1977 (1977-10-01)	4T	8.6	—
			"Part Two"	Derrick Goodwin	Bob Baker and Dave Martin	8 October 1977 (1977-10-08)	4T	7.3	—
			"Part Three"	Derrick Goodwin	Bob Baker and Dave Martin	15 October 1977 (1977-10-15)	4T	7.5	—
			"Part Four"	Derrick Goodwin	Bob Baker and Dave Martin	22 October 1977 (1977-10-22)	4T	8.3	60
94	3	Image of the Fendahl	"Part One"	George Spenton-Foster	Chris Boucher	29 October 1977 (1977-10-29)	4X	6.7	—
			"Part Two"	George Spenton-Foster	Chris Boucher	5 November 1977 (1977-11-05)	4X	7.5	75
			"Part Three"	George Spenton-Foster	Chris Boucher	12 November 1977 (1977-11-12)	4X	7.9	—
			"Part Four"	George Spenton-Foster	Chris Boucher	19 November 1977 (1977-11-19)	4X	9.1	61
95	4	The Sun Makers	"Part One"	Pennant Roberts	Robert Holmes	26 November 1977 (1977-11-26)	4W	8.5	—
			"Part Two"	Pennant Roberts	Robert Holmes	3 December 1977 (1977-12-03)	4W	9.5	—
			"Part Three"	Pennant Roberts	Robert Holmes	10 December 1977 (1977-12-10)	4W	8.9	68
			"Part Four"	Pennant Roberts	Robert Holmes	17 December 1977 (1977-12-17)	4W	8.4	59
96	5	Underworld	"Part One"	Norman Stewart	Bob Baker and Dave Martin	7 January 1978 (1978-01-07)	4Y	8.9	65
			"Part Two"	Norman Stewart	Bob Baker and Dave Martin	14 January 1978 (1978-01-14)	4Y	9.1	—
			"Part Three"	Norman Stewart	Bob Baker and Dave Martin	21 January 1978 (1978-01-21)	4Y	8.9	—
			"Part Four"	Norman Stewart	Bob Baker and Dave Martin	28 January 1978 (1978-01-28)	4Y	11.7	—
97	6	The Invasion of Time	"Part One"	Gerald Blake	David Agnew (Graham Williams and Anthony Read)	4 February 1978 (1978-02-04)	4Z	11.2	56
			"Part Two"	Gerald Blake	David Agnew (Graham Williams and Anthony Read)	11 February 1978 (1978-02-11)	4Z	11.4	—
			"Part Three"	Gerald Blake	David Agnew (Graham Williams and Anthony Read)	18 February 1978 (1978-02-18)	4Z	9.5	—
			"Part Four"	Gerald Blake	David Agnew (Graham Williams and Anthony Read)	25 February 1978 (1978-02-25)	4Z	10.9	—
			"Part Five"	Gerald Blake	David Agnew (Graham Williams and Anthony Read)	4 March 1978 (1978-03-04)	4Z	10.3	—
			"Part Six"	Gerald Blake	David Agnew (Graham Williams and Anthony Read)	11 March 1978 (1978-03-11)	4Z	9.8	—

Season 16 (1978–1979) []

Season 16 consists of one long story arc encompassing six separate, linked stories. This season is referred to by the umbrella title The Key to Time and has been released on DVD under this title. This season introduced Mary Tamm as Romana I.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
98	1	The Ribos Operation	"Part One"	George Spenton-Foster	Robert Holmes	2 September 1978 (1978-09-02)	5A	8.3	59
			"Part Two"	George Spenton-Foster	Robert Holmes	9 September 1978 (1978-09-09)	5A	8.1	—
			"Part Three"	George Spenton-Foster	Robert Holmes	16 September 1978 (1978-09-16)	5A	7.9	—
			"Part Four"	George Spenton-Foster	Robert Holmes	23 September 1978 (1978-09-23)	5A	8.2	67
99	2	The Pirate Planet	"Part One"	Pennant Roberts	Douglas Adams	30 September 1978 (1978-09-30)	5B	9.1	61
			"Part Two"	Pennant Roberts	Douglas Adams	7 October 1978 (1978-10-07)	5B	7.4	—
			"Part Three"	Pennant Roberts	Douglas Adams	14 October 1978 (1978-10-14)	5B	8.2	64
			"Part Four"	Pennant Roberts	Douglas Adams	21 October 1978 (1978-10-21)	5B	8.4	64
100	3	The Stones of Blood	"Part One"	Darrol Blake	David Fisher	28 October 1978 (1978-10-28)	5C	8.6	—
			"Part Two"	Darrol Blake	David Fisher	4 November 1978 (1978-11-04)	5C	6.6	—
			"Part Three"	Darrol Blake	David Fisher	11 November 1978 (1978-11-11)	5C	9.3	—
			"Part Four"	Darrol Blake	David Fisher	18 November 1978 (1978-11-18)	5C	7.6	67
101	4	The Androids of Tara	"Part One"	Michael Hayes	David Fisher	25 November 1978 (1978-11-25)	5D	9.5	—
			"Part Two"	Michael Hayes	David Fisher	2 December 1978 (1978-12-02)	5D	10.1	65
			"Part Three"	Michael Hayes	David Fisher	9 December 1978 (1978-12-09)	5D	8.9	—
			"Part Four"	Michael Hayes	David Fisher	16 December 1978 (1978-12-16)	5D	9.0	66
102	5	The Power of Kroll	"Part One"	Norman Stewart	Robert Holmes	23 December 1978 (1978-12-23)	5E	6.5	—
			"Part Two"	Norman Stewart	Robert Holmes	30 December 1978 (1978-12-30)	5E	12.4	—
			"Part Three"	Norman Stewart	Robert Holmes	6 January 1979 (1979-01-06)	5E	8.9	—
			"Part Four"	Norman Stewart	Robert Holmes	13 January 1979 (1979-01-13)	5E	9.9	63
103	6	The Armageddon Factor	"Part One"	Michael Hayes	Bob Baker and Dave Martin	20 January 1979 (1979-01-20)	5F	7.5	65
			"Part Two"	Michael Hayes	Bob Baker and Dave Martin	27 January 1979 (1979-01-27)	5F	8.8	—
			"Part Three"	Michael Hayes	Bob Baker and Dave Martin	3 February 1979 (1979-02-03)	5F	7.8	—
			"Part Four"	Michael Hayes	Bob Baker and Dave Martin	10 February 1979 (1979-02-10)	5F	8.6	—
			"Part Five"	Michael Hayes	Bob Baker and Dave Martin	17 February 1979 (1979-02-17)	5F	8.6	—
			"Part Six"	Michael Hayes	Bob Baker and Dave Martin	24 February 1979 (1979-02-24)	5F	9.6	66

Season 17 (1979–1980) []

During this season, the role of Romana was taken over by Lalla Ward.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
104	1	Destiny of the Daleks	"Episode One"	Ken Grieve	Terry Nation	1 September 1979 (1979-09-01)	5J	13.0	67
			"Episode Two"	Ken Grieve	Terry Nation	8 September 1979 (1979-09-08)	5J	12.7	—
			"Episode Three"	Ken Grieve	Terry Nation	15 September 1979 (1979-09-15)	5J	13.8	63
			"Episode Four"	Ken Grieve	Terry Nation	22 September 1979 (1979-09-22)	5J	14.4	64
105	2	City of Death	"Part One"	Michael Hayes	David Agnew (Douglas Adams, Graham Williams and David Fisher)	29 September 1979 (1979-09-29)	5H	12.4	—
			"Part Two"	Michael Hayes	David Agnew (Douglas Adams, Graham Williams and David Fisher)	6 October 1979 (1979-10-06)	5H	14.1	64
			"Part Three"	Michael Hayes	David Agnew (Douglas Adams, Graham Williams and David Fisher)	13 October 1979 (1979-10-13)	5H	15.4	—
			"Part Four"	Michael Hayes	David Agnew (Douglas Adams, Graham Williams and David Fisher)	20 October 1979 (1979-10-20)	5H	16.1	64
106	3	The Creature from the Pit	"Part One"	Christopher Barry	David Fisher	27 October 1979 (1979-10-27)	5G	9.3	—
			"Part Two"	Christopher Barry	David Fisher	3 November 1979 (1979-11-03)	5G	10.8	67
			"Part Three"	Christopher Barry	David Fisher	10 November 1979 (1979-11-10)	5G	10.2	—
			"Part Four"	Christopher Barry	David Fisher	17 November 1979 (1979-11-17)	5G	9.6	—
107	4	Nightmare of Eden	"Part One"	Alan Bromly	Bob Baker	24 November 1979 (1979-11-24)	5K	8.7	—
			"Part Two"	Alan Bromly	Bob Baker	1 December 1979 (1979-12-01)	5K	9.6	—
			"Part Three"	Alan Bromly	Bob Baker	8 December 1979 (1979-12-08)	5K	9.6	—
			"Part Four"	Alan Bromly	Bob Baker	15 December 1979 (1979-12-15)	5K	9.4	65
108	5	The Horns of Nimon	"Part One"	Kenny McBain	Anthony Read	22 December 1979 (1979-12-22)	5L	6.0	—
			"Part Two"	Kenny McBain	Anthony Read	29 December 1979 (1979-12-29)	5L	8.8	—
			"Part Three"	Kenny McBain	Anthony Read	5 January 1980 (1980-01-05)	5L	9.8	—
			"Part Four"	Kenny McBain	Anthony Read	12 January 1980 (1980-01-12)	5L	10.4	67
—	6	Shada	N/A	Pennant Roberts	Douglas Adams	Unaired^{[note 2]} (Unaired^{[note 2]})	5M	—	—

Season 18 (1980–1981) []

In a return to the format of early seasons, virtually all serials from Seasons 18 through 20 are linked together, often running directly into each other. Season 18 forms a loose story arc dealing with the theme of entropy. Full Circle, State of Decay, and Warriors' Gate trace the Doctor's adventures in E-Space; they were released in both VHS and DVD boxsets with the umbrella title The E-Space Trilogy. This season saw the departure of Romana and the introduction of companions Adric and Nyssa, and soon-to-be companion, Tegan Jovanka.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
109	1	The Leisure Hive	"Part One"	Lovett Bickford	David Fisher	30 August 1980 (1980-08-30)	5N	5.9	—
			"Part Two"	Lovett Bickford	David Fisher	6 September 1980 (1980-09-06)	5N	5.0	—
			"Part Three"	Lovett Bickford	David Fisher	13 September 1980 (1980-09-13)	5N	5.0	—
			"Part Four"	Lovett Bickford	David Fisher	20 September 1980 (1980-09-20)	5N	4.5	65
110	2	Meglos	"Part One"	Terence Dudley	John Flanagan & Andrew McCulloch	27 September 1980 (1980-09-27)	5Q	5.0	61
			"Part Two"	Terence Dudley	John Flanagan & Andrew McCulloch	4 October 1980 (1980-10-04)	5Q	4.2	64
			"Part Three"	Terence Dudley	John Flanagan & Andrew McCulloch	11 October 1980 (1980-10-11)	5Q	4.7	—
			"Part Four"	Terence Dudley	John Flanagan & Andrew McCulloch	18 October 1980 (1980-10-18)	5Q	4.7	63
111	3	Full Circle	"Part One"	Peter Grimwade	Andrew Smith	25 October 1980 (1980-10-25)	5R	5.9	—
			"Part Two"	Peter Grimwade	Andrew Smith	1 November 1980 (1980-11-01)	5R	3.7	—
			"Part Three"	Peter Grimwade	Andrew Smith	8 November 1980 (1980-11-08)	5R	5.9	—
			"Part Four"	Peter Grimwade	Andrew Smith	15 November 1980 (1980-11-15)	5R	5.4	65
112	4	State of Decay	"Part One"	Peter Moffatt	Terrance Dicks	22 November 1980 (1980-11-22)	5P	5.8	—
			"Part Two"	Peter Moffatt	Terrance Dicks	29 November 1980 (1980-11-29)	5P	5.3	—
			"Part Three"	Peter Moffatt	Terrance Dicks	6 December 1980 (1980-12-06)	5P	4.4	—
			"Part Four"	Peter Moffatt	Terrance Dicks	13 December 1980 (1980-12-13)	5P	5.4	69
113	5	Warriors' Gate	"Part One"	Paul Joyce & Graeme Harper (uncredited)	Stephen Gallagher	3 January 1981 (1981-01-03)	5S	7.1	59
			"Part Two"	Paul Joyce & Graeme Harper (uncredited)	Stephen Gallagher	10 January 1981 (1981-01-10)	5S	6.7	—
			"Part Three"	Paul Joyce & Graeme Harper (uncredited)	Stephen Gallagher	17 January 1981 (1981-01-17)	5S	8.3	—
			"Part Four"	Paul Joyce & Graeme Harper (uncredited)	Stephen Gallagher	24 January 1981 (1981-01-24)	5S	7.8	59
114	6	The Keeper of Traken	"Part One"	John Black	Johnny Byrne	31 January 1981 (1981-01-31)	5T	7.6	—
			"Part Two"	John Black	Johnny Byrne	7 February 1981 (1981-02-07)	5T	6.1	—
			"Part Three"	John Black	Johnny Byrne	14 February 1981 (1981-02-14)	5T	5.2	—
			"Part Four"	John Black	Johnny Byrne	21 February 1981 (1981-02-21)	5T	6.1	63
115	7	Logopolis	"Part One"	Peter Grimwade	Christopher H. Bidmead	28 February 1981 (1981-02-28)	5V	7.7	—
			"Part Two"	Peter Grimwade	Christopher H. Bidmead	7 March 1981 (1981-03-07)	5V	7.7	61
			"Part Three"	Peter Grimwade	Christopher H. Bidmead	14 March 1981 (1981-03-14)	5V	5.8	—
			"Part Four"	Peter Grimwade	Christopher H. Bidmead	21 March 1981 (1981-03-21)	5V	6.1	65

Fifth Doctor[]

The Fifth Doctor was portrayed by Peter Davison.

Season 19 (1982)[]

The show moved from its traditional once-weekly Saturday broadcast to being broadcast twice-weekly primarily on Monday and Tuesday,^[12] although there were regional variations to the schedule. Castrovalva, together with the previous two serials, The Keeper of Traken and Logopolis, form a trilogy involving the return of the Master. They were released on DVD under the banner title New Beginnings. The season marked the final appearance of Adric.^[12]

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
116	1	Castrovalva	"Part One"	Fiona Cumming	Christopher H. Bidmead	4 January 1982 (1982-01-04)	5Z	9.1	–
			"Part Two"	Fiona Cumming	Christopher H. Bidmead	5 January 1982 (1982-01-05)	5Z	8.6	–
			"Part Three"	Fiona Cumming	Christopher H. Bidmead	11 January 1982 (1982-01-11)	5Z	10.2	–
			"Part Four"	Fiona Cumming	Christopher H. Bidmead	12 January 1982 (1982-01-12)	5Z	10.4	–
117	2	Four to Doomsday	"Part One"	John Black	Terence Dudley	18 January 1982 (1982-01-18)	5W	8.4	–
			"Part Two"	John Black	Terence Dudley	19 January 1982 (1982-01-19)	5W	8.8	–
			"Part Three"	John Black	Terence Dudley	25 January 1982 (1982-01-25)	5W	8.9	–
			"Part Four"	John Black	Terence Dudley	26 January 1982 (1982-01-26)	5W	9.4	–
118	3	Kinda	"Part One"	Peter Grimwade	Christopher Bailey	1 February 1982 (1982-02-01)	5Y	8.4	–
			"Part Two"	Peter Grimwade	Christopher Bailey	2 February 1982 (1982-02-02)	5Y	9.4	–
			"Part Three"	Peter Grimwade	Christopher Bailey	8 February 1982 (1982-02-08)	5Y	8.5	–
			"Part Four"	Peter Grimwade	Christopher Bailey	9 February 1982 (1982-02-09)	5Y	8.9	–
119	4	The Visitation	"Part One"	Peter Moffatt	Eric Saward	15 February 1982 (1982-02-15)	5X	9.1	–
			"Part Two"	Peter Moffatt	Eric Saward	16 February 1982 (1982-02-16)	5X	9.3	–
			"Part Three"	Peter Moffatt	Eric Saward	22 February 1982 (1982-02-22)	5X	9.9	–
			"Part Four"	Peter Moffatt	Eric Saward	23 February 1982 (1982-02-23)	5X	10.1	–
120	5	Black Orchid	"Part One"	Ron Jones	Terence Dudley	1 March 1982 (1982-03-01)	6A	9.9	–
120	5	Black Orchid	"Part Two"	Ron Jones	Terence Dudley	2 March 1982 (1982-03-02)	6A	10.1	–
121	6	Earthshock	"Part One"	Peter Grimwade	Eric Saward	8 March 1982 (1982-03-08)	6B	9.1	–
			"Part Two"	Peter Grimwade	Eric Saward	9 March 1982 (1982-03-09)	6B	8.8	–
			"Part Three"	Peter Grimwade	Eric Saward	15 March 1982 (1982-03-15)	6B	9.8	–
			"Part Four"	Peter Grimwade	Eric Saward	16 March 1982 (1982-03-16)	6B	9.6	–
122	7	Time-Flight	"Part One"	Ron Jones	Peter Grimwade	22 March 1982 (1982-03-22)	6C	10.0	–
			"Part Two"	Ron Jones	Peter Grimwade	23 March 1982 (1982-03-23)	6C	8.5	–
			"Part Three"	Ron Jones	Peter Grimwade	29 March 1982 (1982-03-29)	6C	8.9	–
			"Part Four"	Ron Jones	Peter Grimwade	30 March 1982 (1982-03-30)	6C	8.1	–

Season 20 (1983)[]

To commemorate the twentieth season, the stories in this season involve the return of previous villains; Omega, the Mara, the Black Guardian and the Master. Mawdryn Undead, Terminus and Enlightenment involve the Black Guardian's plot to force the Doctor's new companion Vislor Turlough to kill the Doctor; they were released individually on VHS and as a set on DVD as parts of The Black Guardian Trilogy. This season was broadcast twice weekly on Tuesday and Wednesday evenings on BBC1. This was the last season to feature Nyssa as a companion.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
123	1	Arc of Infinity	"Part One"	Ron Jones	Johnny Byrne	3 January 1983 (1983-01-03)	6E	7.2	69
			"Part Two"	Ron Jones	Johnny Byrne	5 January 1983 (1983-01-05)	6E	7.3	70
			"Part Three"	Ron Jones	Johnny Byrne	11 January 1983 (1983-01-11)	6E	6.9	67
			"Part Four"	Ron Jones	Johnny Byrne	12 January 1983 (1983-01-12)	6E	7.2	66
124	2	Snakedance	"Part One"	Fiona Cumming	Christopher Bailey	18 January 1983 (1983-01-18)	6D	6.7	65
			"Part Two"	Fiona Cumming	Christopher Bailey	19 January 1983 (1983-01-19)	6D	7.7	66
			"Part Three"	Fiona Cumming	Christopher Bailey	25 January 1983 (1983-01-25)	6D	6.6	67
			"Part Four"	Fiona Cumming	Christopher Bailey	26 January 1983 (1983-01-26)	6D	7.4	67
125	3	Mawdryn Undead	"Part One"	Peter Moffatt	Peter Grimwade	1 February 1983 (1983-02-01)	6F	6.5	67
			"Part Two"	Peter Moffatt	Peter Grimwade	2 February 1983 (1983-02-02)	6F	7.5	70
			"Part Three"	Peter Moffatt	Peter Grimwade	8 February 1983 (1983-02-08)	6F	7.4	67
			"Part Four"	Peter Moffatt	Peter Grimwade	9 February 1983 (1983-02-09)	6F	7.7	68
126	4	Terminus	"Part One"	Mary Ridge	Stephen Gallagher	15 February 1983 (1983-02-15)	6G	6.8	65
			"Part Two"	Mary Ridge	Stephen Gallagher	16 February 1983 (1983-02-16)	6G	7.5	67
			"Part Three"	Mary Ridge	Stephen Gallagher	22 February 1983 (1983-02-22)	6G	6.5	64
			"Part Four"	Mary Ridge	Stephen Gallagher	23 February 1983 (1983-02-23)	6G	7.4	67
127	5	Enlightenment	"Part One"	Fiona Cumming	Barbara Clegg	1 March 1983 (1983-03-01)	6H	6.6	67
			"Part Two"	Fiona Cumming	Barbara Clegg	2 March 1983 (1983-03-02)	6H	7.2	65
			"Part Three"	Fiona Cumming	Barbara Clegg	8 March 1983 (1983-03-08)	6H	6.2	68
			"Part Four"	Fiona Cumming	Barbara Clegg	9 March 1983 (1983-03-09)	6H	7.3	70
128	6	The King's Demons	"Part One"	Tony Virgo	Terence Dudley	15 March 1983 (1983-03-15)	6J	5.8	65
128	6	The King's Demons	"Part Two"	Tony Virgo	Terence Dudley	16 March 1983 (1983-03-16)	6J	7.2	63
Special
129	–	The Five Doctors	N/A	Peter Moffatt	Terrance Dicks	25 November 1983 (1983-11-25)^[a]	6K	7.7	75

^ The Five Doctors was first broadcast in the United States on 23 November 1983, the actual date of the programme's 20th anniversary.

Season 21 (1984)[]

Episodes were broadcast twice weekly on Thursday and Friday evenings, with Resurrection of the Daleks broadcast on two consecutive Wednesday nights in 45-minute, rather than 25-minute, parts. The Caves of Androzani saw the regeneration of the Fifth Doctor, and the season finale The Twin Dilemma was the first story of the Sixth Doctor. The season marked the departure of Tegan Jovanka and Vislor Turlough, as well as the introduction of Nicola Bryant as Peri Brown.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
130	1	Warriors of the Deep	"Part One"	Pennant Roberts	Johnny Byrne	5 January 1984 (1984-01-05)	6L	7.6	65
			"Part Two"	Pennant Roberts	Johnny Byrne	6 January 1984 (1984-01-06)	6L	7.5	64
			"Part Three"	Pennant Roberts	Johnny Byrne	12 January 1984 (1984-01-12)	6L	7.3	62
			"Part Four"	Pennant Roberts	Johnny Byrne	13 January 1984 (1984-01-13)	6L	6.6	65
131	2	The Awakening	"Part One"	Michael Owen Morris	Eric Pringle	19 January 1984 (1984-01-19)	6M	7.9	65
131	2	The Awakening	"Part Two"	Michael Owen Morris	Eric Pringle	20 January 1984 (1984-01-20)	6M	6.6	63
132	3	Frontios	"Part One"	Ron Jones	Christopher H. Bidmead	26 January 1984 (1984-01-26)	6N	8.0	66
			"Part Two"	Ron Jones	Christopher H. Bidmead	27 January 1984 (1984-01-27)	6N	5.8	69
			"Part Three"	Ron Jones	Christopher H. Bidmead	2 February 1984 (1984-02-02)	6N	7.8	65
			"Part Four"	Ron Jones	Christopher H. Bidmead	3 February 1984 (1984-02-03)	6N	5.6	65
133	4	Resurrection of the Daleks	"Part One"	Matthew Robinson	Eric Saward	8 February 1984 (1984-02-08)	6P	7.3	69
133	4	Resurrection of the Daleks	"Part Two"	Matthew Robinson	Eric Saward	15 February 1984 (1984-02-15)	6P	8.0	65
134	5	Planet of Fire	"Part One"	Fiona Cumming	Peter Grimwade	23 February 1984 (1984-02-23)	6Q	7.4	—
			"Part Two"	Fiona Cumming	Peter Grimwade	24 February 1984 (1984-02-24)	6Q	6.1	—
			"Part Three"	Fiona Cumming	Peter Grimwade	1 March 1984 (1984-03-01)	6Q	7.4	—
			"Part Four"	Fiona Cumming	Peter Grimwade	2 March 1984 (1984-03-02)	6Q	7.0	—
135	6	The Caves of Androzani	"Part One"	Graeme Harper	Robert Holmes	8 March 1984 (1984-03-08)	6R	6.9	65
			"Part Two"	Graeme Harper	Robert Holmes	9 March 1984 (1984-03-09)	6R	6.6	—
			"Part Three"	Graeme Harper	Robert Holmes	15 March 1984 (1984-03-15)	6R	7.8	65
			"Part Four"	Graeme Harper	Robert Holmes	16 March 1984 (1984-03-16)	6R	7.8	68

Sixth Doctor[]

The Sixth Doctor was portrayed by Colin Baker.

Season 21 (1984) continued[]

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
136	7	The Twin Dilemma	"Part One"	Peter Moffatt	Anthony Steven	22 March 1984 (1984-03-22)	6S	7.6	61
			"Part Two"	Peter Moffatt	Anthony Steven	23 March 1984 (1984-03-23)	6S	7.4	66
			"Part Three"	Peter Moffatt	Anthony Steven	29 March 1984 (1984-03-29)	6S	7.0	59
			"Part Four"	Peter Moffatt	Anthony Steven	30 March 1984 (1984-03-30)	6S	6.3	67

Season 22 (1985)[]

The series moved back to once-weekly Saturday broadcasts. All episodes were 45 minutes long, though they also exist in 25-minute versions. Although there were now only 13 episodes in the season, the total running time remained approximately the same as in previous seasons since the episodes were almost twice as long.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
137	1	Attack of the Cybermen	"Part One"	Matthew Robinson	Paula Moore	5 January 1985 (1985-01-05)	6T	8.9	61
137	1	Attack of the Cybermen	"Part Two"	Matthew Robinson	Paula Moore	12 January 1985 (1985-01-12)	6T	7.2	65
138	2	Vengeance on Varos	"Part One"	Ron Jones	Philip Martin	19 January 1985 (1985-01-19)	6V	7.2	63
138	2	Vengeance on Varos	"Part Two"	Ron Jones	Philip Martin	26 January 1985 (1985-01-26)	6V	7.0	65
139	3	The Mark of the Rani	"Part One"	Sarah Hellings	Pip and Jane Baker	2 February 1985 (1985-02-02)	6X	6.3	64
139	3	The Mark of the Rani	"Part Two"	Sarah Hellings	Pip and Jane Baker	9 February 1985 (1985-02-09)	6X	7.3	64
140	4	The Two Doctors	"Part One"	Peter Moffatt	Robert Holmes	16 February 1985 (1985-02-16)	6W	6.6	65
			"Part Two"	Peter Moffatt	Robert Holmes	23 February 1985 (1985-02-23)	6W	6.0	62
			"Part Three"	Peter Moffatt	Robert Holmes	2 March 1985 (1985-03-02)	6W	6.9	65
141	5	Timelash	"Part One"	Pennant Roberts	Glen McCoy	9 March 1985 (1985-03-09)	6Y	6.7	66
141	5	Timelash	"Part Two"	Pennant Roberts	Glen McCoy	16 March 1985 (1985-03-16)	6Y	7.4	64
142	6	Revelation of the Daleks	"Part One"	Graeme Harper	Eric Saward	23 March 1985 (1985-03-23)	6Z	7.4	67
142	6	Revelation of the Daleks	"Part Two"	Graeme Harper	Eric Saward	30 March 1985 (1985-03-30)	6Z	7.7	65

Season 23 (1986)[]

The whole season is titled as The Trial of a Time Lord, and is split into four segments. The segments are commonly referred to by their respective novelisation's titles^[13] (listed below) but the season was broadcast as one fourteen-part story and these titles did not appear on screen. Episode length returned to 25 minutes, but with only fourteen episodes in the season, making the total running time of this season (and subsequent seasons) just over half of the previous seasons, going back to season 7. The season saw the departure of Peri and the introduction of Bonnie Langford as companion Mel Bush.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
143a	1	The Mysterious Planet	"Part One"	Nicholas Mallett	Robert Holmes	6 September 1986 (1986-09-06)	7A	4.9	72
			"Part Two"	Nicholas Mallett	Robert Holmes	13 September 1986 (1986-09-13)	7A	4.9	69
			"Part Three"	Nicholas Mallett	Robert Holmes	20 September 1986 (1986-09-20)	7A	3.9	70
			"Part Four"	Nicholas Mallett	Robert Holmes	27 September 1986 (1986-09-27)	7A	3.7	72
143b	2	Mindwarp	"Part Five"	Ron Jones	Philip Martin	4 October 1986 (1986-10-04)	7B	4.8	71
			"Part Six"	Ron Jones	Philip Martin	11 October 1986 (1986-10-11)	7B	4.6	69
			"Part Seven"	Ron Jones	Philip Martin	18 October 1986 (1986-10-18)	7B	5.1	66
			"Part Eight"	Ron Jones	Philip Martin	25 October 1986 (1986-10-25)	7B	5.0	72
143c	3	Terror of the Vervoids	"Part Nine"	Chris Clough	Pip and Jane Baker	1 November 1986 (1986-11-01)	7C	5.2	66
			"Part Ten"	Chris Clough	Pip and Jane Baker	8 November 1986 (1986-11-08)	7C	4.6	69
			"Part Eleven"	Chris Clough	Pip and Jane Baker	15 November 1986 (1986-11-15)	7C	5.3	69
			"Part Twelve"	Chris Clough	Pip and Jane Baker	22 November 1986 (1986-11-22)	7C	5.3	69
143d	4	The Ultimate Foe	"Part Thirteen"	Chris Clough	Robert Holmes	29 November 1986 (1986-11-29)	7C	4.4	69
143d	4	The Ultimate Foe	"Part Fourteen"	Chris Clough	Pip and Jane Baker	6 December 1986 (1986-12-06)	7C	5.6	69

Seventh Doctor[]

The Seventh Doctor was portrayed by Sylvester McCoy.

Season 24 (1987)[]

This season was moved to a Monday schedule. Mel Bush left in Dragonfire, and the companion role was taken over by Sophie Aldred as Ace.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
144	1	Time and the Rani	"Part One"	Andrew Morgan	Pip and Jane Baker	7 September 1987 (1987-09-07)	7D	5.1	58
			"Part Two"	Andrew Morgan	Pip and Jane Baker	14 September 1987 (1987-09-14)	7D	4.2	63
			"Part Three"	Andrew Morgan	Pip and Jane Baker	21 September 1987 (1987-09-21)	7D	4.3	57
			"Part Four"	Andrew Morgan	Pip and Jane Baker	28 September 1987 (1987-09-28)	7D	4.9	59
145	2	Paradise Towers	"Part One"	Nicholas Mallett	Stephen Wyatt	5 October 1987 (1987-10-05)	7E	4.5	61
			"Part Two"	Nicholas Mallett	Stephen Wyatt	12 October 1987 (1987-10-12)	7E	5.2	58
			"Part Three"	Nicholas Mallett	Stephen Wyatt	19 October 1987 (1987-10-19)	7E	5.0	58
			"Part Four"	Nicholas Mallett	Stephen Wyatt	26 October 1987 (1987-10-26)	7E	5.0	57
146	3	Delta and the Bannermen	"Part One"	Chris Clough	Malcolm Kohll	2 November 1987 (1987-11-02)	7F	5.3	63
			"Part Two"	Chris Clough	Malcolm Kohll	9 November 1987 (1987-11-09)	7F	5.1	60
			"Part Three"	Chris Clough	Malcolm Kohll	16 November 1987 (1987-11-16)	7F	5.4	60
147	4	Dragonfire	"Part One"	Chris Clough	Ian Briggs	23 November 1987 (1987-11-23)	7G	5.5	61
			"Part Two"	Chris Clough	Ian Briggs	30 November 1987 (1987-11-30)	7G	5.0	61
			"Part Three"	Chris Clough	Ian Briggs	7 December 1987 (1987-12-07)	7G	4.7	64

Season 25 (1988–1989) []

The series was moved to Wednesdays. The programme celebrated its 25th anniversary with the serial story Silver Nemesis.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
148	1	Remembrance of the Daleks	"Part One"	Andrew Morgan	Ben Aaronovitch	5 October 1988 (1988-10-05)	7H	5.5	68
			"Part Two"	Andrew Morgan	Ben Aaronovitch	12 October 1988 (1988-10-12)	7H	5.8	69
			"Part Three"	Andrew Morgan	Ben Aaronovitch	19 October 1988 (1988-10-19)	7H	5.1	70
			"Part Four"	Andrew Morgan	Ben Aaronovitch	26 October 1988 (1988-10-26)	7H	5.0	72
149	2	The Happiness Patrol	"Part One"	Chris Clough	Graeme Curry	2 November 1988 (1988-11-02)	7L	5.3	67
			"Part Two"	Chris Clough	Graeme Curry	9 November 1988 (1988-11-09)	7L	4.6	65
			"Part Three"	Chris Clough	Graeme Curry	16 November 1988 (1988-11-16)	7L	5.3	65
150	3	Silver Nemesis	"Part One"	Chris Clough	Kevin Clarke	23 November 1988 (1988-11-23)	7K	6.1	71
			"Part Two"	Chris Clough	Kevin Clarke	30 November 1988 (1988-11-30)^[a]	7K	5.2	70
			"Part Three"	Chris Clough	Kevin Clarke	7 December 1988 (1988-12-07)^[a]	7K	5.2	70
151	4	The Greatest Show in the Galaxy	"Part One"	Alan Wareing	Stephen Wyatt	14 December 1988 (1988-12-14)	7J	5.0	68
			"Part Two"	Alan Wareing	Stephen Wyatt	21 December 1988 (1988-12-21)	7J	5.3	66
			"Part Three"	Alan Wareing	Stephen Wyatt	28 December 1988 (1988-12-28)	7J	4.8	69
			"Part Four"	Alan Wareing	Stephen Wyatt	4 January 1989 (1989-01-04)	7J	6.6	64

^ Jump up to: ^a ^b Parts Two and Three of Silver Nemesis were first broadcast in New Zealand on 25 November 1988 as part of a compilation broadcast before their UK transmission.^[14]

Season 26 (1989)[]

The final season continued to push the series towards a darker approach, focusing this time more on Ace's personal life as well as The Doctor's past and manipulations. This season set the tone for the Virgin New Adventures novels that followed.

Story	Serial	Serial title	Episode titles	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
152	1	Battlefield	"Part One"	Michael Kerrigan	Ben Aaronovitch	6 September 1989 (1989-09-06)	7N	3.1	69
			"Part Two"	Michael Kerrigan	Ben Aaronovitch	13 September 1989 (1989-09-13)	7N	3.9	68
			"Part Three"	Michael Kerrigan	Ben Aaronovitch	20 September 1989 (1989-09-20)	7N	3.6	67
			"Part Four"	Michael Kerrigan	Ben Aaronovitch	27 September 1989 (1989-09-27)	7N	4.0	65
153	2	Ghost Light	"Part One"	Alan Wareing	Marc Platt	4 October 1989 (1989-10-04)	7Q	4.2	68
			"Part Two"	Alan Wareing	Marc Platt	11 October 1989 (1989-10-11)	7Q	4.0	68
			"Part Three"	Alan Wareing	Marc Platt	18 October 1989 (1989-10-18)	7Q	4.0	64
154	3	The Curse of Fenric	"Part One"	Nicholas Mallett	Ian Briggs	25 October 1989 (1989-10-25)	7M	4.3	67
			"Part Two"	Nicholas Mallett	Ian Briggs	1 November 1989 (1989-11-01)	7M	4.0	68
			"Part Three"	Nicholas Mallett	Ian Briggs	8 November 1989 (1989-11-08)	7M	4.0	68
			"Part Four"	Nicholas Mallett	Ian Briggs	15 November 1989 (1989-11-15)	7M	4.2	68
155	4	Survival	"Part One"	Alan Wareing	Rona Munro	22 November 1989 (1989-11-22)	7P	5.0	69
			"Part Two"	Alan Wareing	Rona Munro	29 November 1989 (1989-11-29)	7P	4.8	69
			"Part Three"	Alan Wareing	Rona Munro	6 December 1989 (1989-12-06)	7P	5.0	71

Eighth Doctor[]

The Eighth Doctor was portrayed by Paul McGann. The movie is the only television appearance of this Doctor during his tenure. The only production title held by this story was Doctor Who. The DVD release is titled Doctor Who: The Movie. In 2013, Paul McGann returned for the second television appearance of the Eighth Doctor in the minisode titled "The Night of the Doctor". Concerning the production code, "TVM" is used in the BBC's online episode guide.^[15] The actual code used during production is 50/LDX071Y/01X.^[16] Doctor Who Magazine's "Complete Eighth Doctor Special" gives the production code as #83705.^[17]

Television movie (1996)[]

Story	Title	Directed by	Written by	Original air date	Prod. code	UK viewers (millions) ^[9]	AI ^[9]
156	Doctor Who	Geoffrey Sax	Matthew Jacobs	12 May 1996 (1996-05-12) (Canada) 14 May 1996 (USA) 27 May 1996 (UK)	TVM	9.08	75

^ This episode has no on-screen episode title^[10]
^ Shada was left unfinished due to a strike. Its recorded footage was later released on home video using linking narration by Tom Baker to complete the story. It is not included in the episode or story counts as it was not broadcast.

References[]

Sources[]

^ "Dr Who 'longest-running sci-fi'". BBC. 28 September 2006. Retrieved 15 December 2007.
^ Howe, David J.; Walker, Stephen James (2003) [1998]. "The Trial of a Time Lord: 1–4 : Details". Doctor Who: The Television Companion (Doctor Who website). BBC. Retrieved 27 October 2007.
^ Cornell, Paul; Day, Martin; Topping, Keith (1995). "The Five Doctors: Details". Doctor Who: The Discontinuity Guide. BBC Doctor Who website. Retrieved 27 October 2007.
^ Spilsbury, Tom (22 April 2009). "The Mighty 200!". Doctor Who Magazine. Royal Tunbridge Wells, Kent: Panini Comics (407): 26–29.
^ "Jodie Whittaker and Chris Chibnall confirmed to leave Doctor Who in 2022". Radio Times. Retrieved 29 July 2021.
^ Fullerton, Huw (25 July 2021). "BBC confirms Doctor Who series 13 will be a single serialised story". Radio Times. Retrieved 25 July 2021.
^ Jeffery, Morgan (16 February 2020). "Doctor Who series 13 to begin filming in autumn 2020". Radio Times. Retrieved 17 February 2020.
^ Jump up to: ^a ^b ^c "'Doctor Who': BBC Confirms Jodie Whittaker & Chris Chibnall Are Leaving The Iconic Sci-Fi Series". Deadline Hollywood. Retrieved 29 July 2021.
^ Jump up to: ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab ^ac ^ad ^ae ^af ^ag ^ah ^ai ^aj ^ak ^al ^am ^an ^ao ^ap ^aq ^ar ^as ^at ^au ^av ^aw ^ax ^ay ^az ^ba ^bb ^bc ^bd ^be ^bf "Ratings Guide". Doctor Who News. Retrieved 27 December 2014.
^ "BBC – Doctor Who Classic Episode Guide – The Dominators – Details". bbc.co.uk.
^ "Tom Baker". BBC Doctor Who website. 12 August 2004. Archived from the original on 29 December 2008. Retrieved 23 April 2013.
^ Jump up to: ^a ^b "BBC - Archive - The Changing Face of Doctor Who - Audience Research Report on 'Doctor Who' for 1982". www.bbc.co.uk.
^ "Doctor Who – Classic Series – Episode Guide – Second Doctor Index". BBC. Retrieved 18 May 2011.
^ Howe, David J; Walker, Stephen James (1998). "Part Two – Fiction: The Stories". Doctor Who – The Handbook: The Seventh Doctor. London: Doctor Who Books. p. 69. ISBN 0-426-20527-8.
^ Howe, David J.; Walker, Stephen James. "The TV Movie: Details". Doctor Who: The Television Companion (Doctor Who website). BBC. Retrieved 26 July 2007.
^ Segal, Philip; Russell, Gary (2000). Doctor Who: Regeneration. Harper Collins Entertainment. ISBN 0-00-710591-6.
^ "The DWM Archive: Doctor Who (1996) – In Production". Doctor Who Magazine Special Edition (5). 3 September 2003. p. 69. ISSN 0957-9818.

General websites[]

"Episode Guide". Doctor Who Classic series. BBC.
Shaun Lyon, David Hancock; et al. "The Canon Keeper's Guide to Doctor Who". Outpost Gallifrey. Archived from the original on 8 July 2009.
Shaun Lyon; et al. "Doctor Who episode guide". Outpost Gallifrey. Archived from the original on 8 July 2009.
Boies, Dominique. "Doctor Who reference guide". Archived from the original on 5 February 2015.

External links[]

BBC Classic Series Episode Guide
BBC Episode Guide (Classic and New Series)
Doctor Who Reference Guide – detailed descriptions of all televised episodes, plus spin-off audio, video, and literary works.
Doctor Who (1963–1989) at IMDb
Doctor Who (1996) at IMDb
Doctor Who (2005–) at IMDb

[overview1-5] The First Doctor remained for the first two serials of season 4. The Second Doctor featured for the remainder of the season from the third serial, The Power of the Daleks.

[overview2-6] Also known by its subtitle, The Key to Time.

[overview3-7] Shada was left unfinished due to a strike. The story was later completed and officially released on home media in 2017. The voices of the original actors with new animation was incorporated to bridge the gaps between the recorded live-action segments. It is not included in the episode or story counts as it was not broadcast.

[overview4-8] The Fifth Doctor regenerated in the sixth serial of season 21. The Sixth Doctor featured only in the final serial, The Twin Dilemma.

[overview7-9] A change in transmission format for this season only as episodes were 45 minutes instead of the usual 23 minutes. Thus a traditional 4-part story was transmitted in 2 parts.

[overview5-10] Also known by its subtitle, The Trial of a Time Lord.

[14] These specials consist of the 2008 Christmas, 2009 Easter, 2009 November and the 2009–10 Christmas/New Year's Day episodes.

[15] These specials consist of the 50th Anniversary and 2013 Christmas episodes.

[overview6-16] This episode was the first episode of the twelfth series, and thus not a special aired outside of a series, but it was aired outside of the respective series' traditional timeslot to air deliberately on New Year's Day.

[18] These specials consist of the 2022 New Year’s Day episode, an early 2022 special, and a late 2022 special for the BBC's centenary celebrations.^[8]

[25] The Five Doctors was first broadcast in the United States on 23 November 1983, the actual date of the programme's 20th anniversary.

[SilverNemesis-28] Jump up to: ^a ^b Parts Two and Three of Silver Nemesis were first broadcast in New Zealand on 25 November 1988 as part of a compilation broadcast before their UK transmission.^[14]

[dominators-21] This episode has no on-screen episode title^[10]

[shada-23] Shada was left unfinished due to a strike. Its recorded footage was later released on home video using linking narration by Tom Baker to complete the story. It is not included in the episode or story counts as it was not broadcast.

[record-1] "Dr Who 'longest-running sci-fi'". BBC. 28 September 2006. Retrieved 15 December 2007.

[2] Howe, David J.; Walker, Stephen James (2003) [1998]. "The Trial of a Time Lord: 1–4 : Details". Doctor Who: The Television Companion (Doctor Who website). BBC. Retrieved 27 October 2007.

[3] Cornell, Paul; Day, Martin; Topping, Keith (1995). "The Five Doctors: Details". Doctor Who: The Discontinuity Guide. BBC Doctor Who website. Retrieved 27 October 2007.

[4] Spilsbury, Tom (22 April 2009). "The Mighty 200!". Doctor Who Magazine. Royal Tunbridge Wells, Kent: Panini Comics (407): 26–29.

[Series13Episodes-11] "Jodie Whittaker and Chris Chibnall confirmed to leave Doctor Who in 2022". Radio Times. Retrieved 29 July 2021.

[12] Fullerton, Huw (25 July 2021). "BBC confirms Doctor Who series 13 will be a single serialised story". Radio Times. Retrieved 25 July 2021.

[13] Jeffery, Morgan (16 February 2020). "Doctor Who series 13 to begin filming in autumn 2020". Radio Times. Retrieved 17 February 2020.

[2022Specials-17] Jump up to: ^a ^b ^c "'Doctor Who': BBC Confirms Jodie Whittaker & Chris Chibnall Are Leaving The Iconic Sci-Fi Series". Deadline Hollywood. Retrieved 29 July 2021.

[AllRatings-19] Jump up to: ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab ^ac ^ad ^ae ^af ^ag ^ah ^ai ^aj ^ak ^al ^am ^an ^ao ^ap ^aq ^ar ^as ^at ^au ^av ^aw ^ax ^ay ^az ^ba ^bb ^bc ^bd ^be ^bf "Ratings Guide". Doctor Who News. Retrieved 27 December 2014.

[20] "BBC – Doctor Who Classic Episode Guide – The Dominators – Details". bbc.co.uk.

[22] "Tom Baker". BBC Doctor Who website. 12 August 2004. Archived from the original on 29 December 2008. Retrieved 23 April 2013.

[bbc.co.uk-24] Jump up to: ^a ^b "BBC - Archive - The Changing Face of Doctor Who - Audience Research Report on 'Doctor Who' for 1982". www.bbc.co.uk.

[26] "Doctor Who – Classic Series – Episode Guide – Second Doctor Index". BBC. Retrieved 18 May 2011.

[27] Howe, David J; Walker, Stephen James (1998). "Part Two – Fiction: The Stories". Doctor Who – The Handbook: The Seventh Doctor. London: Doctor Who Books. p. 69. ISBN 0-426-20527-8.

[movie-29] Howe, David J.; Walker, Stephen James. "The TV Movie: Details". Doctor Who: The Television Companion (Doctor Who website). BBC. Retrieved 26 July 2007.

[regeneration-30] Segal, Philip; Russell, Gary (2000). Doctor Who: Regeneration. Harper Collins Entertainment. ISBN 0-00-710591-6.

[Complete_Eighth_Doctor-31] "The DWM Archive: Doctor Who (1996) – In Production". Doctor Who Magazine Special Edition (5). 3 September 2003. p. 69. ISSN 0957-9818.

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[5]

[6]

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[g]

[h]

[i]

[j]

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[9]

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[11]

[note 2]

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[10]

List of Doctor Who episodes (1963–1989)

Series overview[]

Regular seasons[]

Specials[]

Notes[]

Episodes[]

First Doctor[]

Season 1 (1963–1964) []

Season 2 (1964–1965) []

Season 3 (1965–1966) []

Season 4 (1966–1967) []

Second Doctor[]

Season 4 (1966–1967) continued[]

Season 5 (1967–1968) []

Season 6 (1968–1969) []

Third Doctor[]

Season 7 (1970)[]

Season 8 (1971)[]

Season 9 (1972)[]

Season 10 (1972–1973) []

Season 11 (1973–1974) []

Fourth Doctor[]

Season 12 (1974–1975) []

Season 13 (1975–1976) []

Season 14 (1976–1977) []

Season 15 (1977–1978) []

Season 16 (1978–1979) []

Season 17 (1979–1980) []

Season 18 (1980–1981) []

Fifth Doctor[]

Season 19 (1982)[]

Season 20 (1983)[]

Season 21 (1984)[]

Sixth Doctor[]

Season 21 (1984) continued[]

Season 22 (1985)[]

Season 23 (1986)[]

Seventh Doctor[]

Season 24 (1987)[]

Season 25 (1988–1989) []

Season 26 (1989)[]

Eighth Doctor[]

Television movie (1996)[]

See also[]

References[]

Sources[]

General websites[]

External links[]