(Thames drama, 1977)

Set in the early days of the Second World War.

Episode 2:
Features a trip on a London Transport AEC Regent STL:

Episode 4:
One Bedford OB and another bus, not well seen:

Episode 6:
This time we see the STL from outside. It's STL441 (AXM693), new in 1934 with an LPTB body, and seen here in wartime tivery: