Has a brief appearance by London Transport AEC Routemaster RM2145 (CUV145C) on route 8 at Bank Underground Station, also an aerial shot of an LT RTL-class Leyland Titan PD2.
Episode 4:
Features stock footage of Heathrow Airport, including this Bedford SB. The sequence also appears in another ITC show, Department S, in season 2 episode 19, 'Ticket to Nowhere':
Episode 8:
A night shot of a London Transport RTL-class Leyland Titan PD2 on route 38A.
Episode 10:
Stock footage of BEA AEC Routemasters at Heathrow Airport, some with trailers. A Bedford SB/Duple Super Vega is seen parked at Heathrow Airport in the background of an in-car scene:
Brief views of a grey AEC Reliance/Harrington Cavalier, a rare Saunders-bodied AEC RT, and a cream/blue Bedford SB/Duple Bella Vega.
Episode 15:
The coach seen in Episode 4 appears again here (the screenshot above is from this episode, in fact!) and also included is this view of a 1966 BOAC Leyland Atlantean/MCW coach.
Episode 17:
Brief views of a French Chausson APU53 singledecker and an Italian Fiat.
Episode 18:
A singledeck Guy Arab in Hong Kong. Episodes 23 and 27:
Glimpses of London RT family buses.
(Compiled from my own observations and those recorded at the Internet Movie Cars Database)