BR 201 DEMU No 1017 recorded as on the 9.10am from Charing Cross on 20 September 1959. I suspect it is on the "straight" between Tonbridge and Ashford but I'm not sure where exactly. Headcode 4 indicates Charing Cross - Orpington - Tonbridge - Dover - Ramsgate - Margate.

Photo: J. Head / Rail Archive Stephenson