BR 7MT 4-6-2 No 70019 Lightning with the 4.15pm Paddington-Cardiff approaching West Drayton on 17 August 1957. Lightning had been a Plymouth Laira engine from new in 1951 before moving to Cardiff Canton in December 1956 when work on the West of England main line diminished, remaining at Canton until September 1961.

Photo: K.L. Cook / Rail Archive Stephenson