633 1930s where
LMS class 2P 4-4-0 No 633 fitted with a Dabeg feed water heater at a Works in c1937. It must be a works yard as there are boilers on the ground, I don't think it is Horwich so it is either Crewe or Derby and the building behind has Midland Railway features.
Photo: T.G. Hepburn/Rail Archive Stephenson