Trivia: Kenneth Williams was originally offered the role of Albright, but turned it down due to an inferior script. This was the first "Carry On" film not to feature Williams since the series began in 1958.
Trivia: In the scene where Charles Hawtry is training to drive the taxi, it has L plates on. These are real, as after he got the part Hawtry told the producers that he didn't have a driving licence. He had to apply for one and was given a few driving lessons in Pinewood Studios car park to learn the basics for this scene. This is why you don't see him do much taxi driving in the film.