GNR K2 2-6-0 No 61740 Nottingham-Spalding train leaving Peterborough North on 29 June 1950. It carries a 35A shed plate which were only applied from February 1950 and it left that depot for Immingham on New Years Day 1951. I think this is a Spalding train and includes at least three nice GER vehcles.

Photo:W.J. Verden Anderson/Rail Archive Stephenson