(1947, James Mason, Robert Newton)

Set in Belfast, the opening scenes feature distant buses and trolleybuses:

Briefly seen is Belfast Corporation 45; this is an AEC 664T trolleybus with Harkness body new in 1941:

(This however looks like a London Transport trolleybus to me):

Later there is a brawl abroad tram 179, during which one man is thrown out of a window: