Carry On Cabby
Speedee Taxis is a great success, which means its workaholic owner Charlie starts neglecting Peggy, his wife. Suddenly a fleet of rival taxis appears from nowhere and start pinching all the fares. The rivals are Glamcabs, and they have a secret weapon. All their drivers are very attractive women! Who's behind Glamcabs? It's open warfare and only one fleet can survive!
Back to Black & White for this one, not sure how that happened. Probably one the BBC won't show nowadays as it involves a rival female taxi crew whose main selling point is their sex.