BR Britannia 4-6-2 No 70050 Firth of Clyde with a northbound express climbing Shap on 16 October 1955.
Peter Kerslake adds: The driver of Polmadie's 70050 is at his cabside window hoping that his efforts with the regulator are to the cameraman's liking as they climb Shap ,his steed working hard with over ten coaches in tow.
Photo: W.J. Verden Anderson / Rail Archive Stephenson