(BBC anthology series, 1973-80)

A curiosity, this - a show that started life as a documentary series, but morphed into a drama series.
Episode 1.01:
Only the pilot episode of the first series survives, and it's an odd watch. Featured at one point is MLK952, a former Grey Green Leyland Royal Tiger PSU1/15 with Harrington Wayfarer body. It was new in 1952, but when filmed was being used as a mobile home: