(1973, Ray Cooney, Leslie Phillips, Julie Ege)

London Transport RM1625 (626DYE) appears in four scenes in total, twice in passing shots:

It's also passing in the street below as these items of clothing are flung out……

…..not once, but twice! On the second occasion the dent in the roof is not seen:

(thanks Steve DeBank at Britmovie.co.uk)