Carrying a 31D South Lynn shedplate, but tablet catcher removed so it could be post M&GN? It went to Boston shed after the M&GN closed. In the left distance there is a loco visible side on to the camera so there might be a triangle at this location.

Looking at the loco condition I believe this to be when she was at Colwick in 1964 and the location might be Bagthorpe Jct, Nottingham. These are several images of her in Notts in 1964.