(1969, Ian McShane, Suzanne Pleshette et al)
A whirlwind coach tour of Europe overseen by tour guide McShane.
The coach is a Van Hool and it arrives at the London start of the tour in front of a black and cream AEC Reliance/Harrington Cavalier - I'd guess it's one of the Jack Crump fleet.
This being London, we see AEC Routemasters:
….but also this AEC Reliance/Duple:
The Van Hool is of course the star as the party travels across Europe:
..We also see a similar coach parked alongside, and an Athens bus: