British Rail 15107 was a locomotive commissioned by the Great Western Railway, but delivered to British Railways after nationalisation. It was a diesel powered locomotive in the pre-TOPS period built by Brush Traction with a Petter 4-cylinder engine.
Its shed allocation in 1950 was Western Region, 82B, St Philips Marsh, Bristol. Number 15107 had a short life and never acquired a British Railways classification. It was withdrawn in June 1958 and broken up at Swindon Works.