Zany comedy that has sadly dated rather badly.
Episode 1.02: Snooze:
In one sequence of this 1970 episode, Bill Oddie is seen sleepwalking stepping onto and then off the roof of a London Transport Leyland RTL. The footage is indistinct and we don't see the front, but there is a good chance this is RTL1525 (OLD666), which did considerable film and TV work about that time:
(thanks Scot Fergie)
Episode 7.01: Alternative Roots:
Features a Caetano-bodied Bedford VAS of Thorpe Motor Company of London NW10, GLH23J. Bill Oddie is considerably hairier in this 1977 episode: