LMS 2MT 2-6-2T No 41271 recorded as with a Bletchley train leaving Bedford St.Johns No 1 on 2 June 1961, but I am sure this is a Bedford to Hitchin train crossing the LNWR Bletchley to Sandy line. The signalman is about to hand over the single line tablet for the section to Cardington, rather strangely this was a job for the man in the LNWR box although he did control the LNWR station as well.

Photo: M.J. Fox / Rail Archive Stephenson