S&D 7F No. 53810 (originally S&D No. 90) pictured just north of the Winsor Hill tunnels with the 10.42 am (SO) Exmouth-Cleethorpes service of at least eight carriages on 28 July 1962, a few weeks before such services were diverted.
Note the disused signalbox in the background plus disused and fenced-off quarry sidings. To the left can be seen both a standard metal 40 mph speed limit sign as well as an illuminated speed limit sign adjacent.
Below the whistle board, a person is visible in the full res. image holding up what is probably a microphone.
Medium format 9 x 6 cm negative.