Maunsell SR L1 class 4-4-0 No A753 in the late 1920s. This is at Herne Hill in South London - junction between the ex LCDR lines from Victoria and Holborn Viaduct/Blackfriars/cross London freight line to Kings Cross and Kentish Town via the Snow Hill tunnel (now part of Thameslink). The train is a Victoria - Ramsgate service.
Photo: S.A.W. Harvey/Rail Archive Stephenson