GWR 57XX class 0-6-0PT Np 9653 at Gerrards Cross with a ballast train in April 1953.
It appears to be running 'wrong line' unless the tracks here were signalled for multi directional running. The train is made up of eleven identical ballast hopper wagons of GWR design.

Photo: C.R.L. Coles/Rail Archive Stephenson