Class 40 40071 passes through Dore and Totley with the 1515 Manchester Piccadilly to Harwich Parkeston Quay service.
I travelled on this service several times during the late 1970's and early 80's but never copped a 40.
The loco will come off at Sheffield where 47117 will take over for the journey south.
Photo dated 26/8/76.
Photographer B.Watkins.