Episode 1.07 and 1.08: Chicago Holiday Parts 1 and 2
Two parter from the underrated show about a Canadian Mountie in Chicago has lots of good footage of former London Transport RT4785 (OLD822). Although set in Chicago, the scene is shot in Toronto, and although RT4785 carries posters for 'Windy City Tours', it was actually based on Toronto at the time. The bulk of the action takes place in episode 7; some of it appears in episode 8 in recap:
The only new view in episode 8 is of Mountie Fraser jumping off the bus:
Also glimpsed in episode 8 is a real Chicago bus, Chicago Transit 4253, a 1985 MAN Americana SL40102L: