Carry On at Your Convenience (1971)

Factual error: About ten minutes into the film, in the scene where there is a staff meeting deciding whether they should strike, the junior assistant talks about how much tea breaks cost the company each week. He says something along the lines of 'each member of staff has 18 toilet visits a day due to drinking tea. At four minutes a time this contributes to 72 minutes each day lost. This means we lose 15 hours a week due to visits to the toilet'. Even if the staff worked seven days a week, this would only amount to 8.4 hours lost.

Sid: How about some food?
Beattie: Well I could make you some beans on toast or something?
Sid: No, nothing too elaborate, thank you.

Trivia: This was the first Carry On film to be a box-office failure and only broke even in 1978 after distribution rights and television deals.