Three For All (1975, Adrienne Posta, Lesley North, Cheryl Hall)

English pop band and their girlfriends travel to Spain. Said girlfriends are first seen running down the road through London traffic, with assorted AEC Routemasters in background. The only one identifiable is RM374 (WLT374):
Later in the movie they board a coach, which turns out to be DMJ209D, a 1966 Bedford VAM5/Duple new to Ementon of Cranfield. A West Yorkshire Bristol RELH/Plaxton in National Bus Company white passes as the coach driver loads their luggage, and a white Duple Dominant bodied Leyland Leopard passes on the road:
....but the coach itself is not well seen:
Arrived in Spain, the girls travel on this Mercedes O319: