Visible crew/equipment: When Professor Vrooshka visits Arthur's caravan and asks him if he has any crumpet, you can see the reflection of the boom operator on the front door window behind her.
Carry on Behind (1975)
1 visible crew/equipment mistake
Directed by: Gerald Thomas
Starring: Kenneth Williams, Kenneth Connor, Elke Sommer, Bernard Bresslaw
Genres: Comedy
Continuity mistake: When Ian Lavender is outside the shower room he has a yellow towel, but as soon as he gets inside it has changed to an orange patterned towel.
Prof. Anna Vrooshka: Tomorrow, we are poking holes all over caravan site.
Prof. Roland Crump: I don't think they would like that at all.
Prof. Anna Vrooshka: It's ok, we are poking early.
Trivia: In the butcher's shop scene at the beginning of the film, Fred rescues Ernie who has been locked in the freezer overnight. Jack Douglas was covered in frost effect plastic for the scene, but the rest of the cast/crew felt he had got away lightly, and threw him into a river.