Directed by: Gerald Thomas
Starring: Kenneth Williams, Charles Hawtrey, Bernard Cribbins, Barbara Windsor
Genres: Comedy
Other mistake: When our heroes are on the conveyor belt in the rock-processing plant, none of the rocks are larger than two feet in size - especially having gone past a set of spinning saw blades - and yet they get sprayed by two steam nozzles, the highest of which is about six feet in the air, and the lowest is about four feet in the air. Clearly neither of these nozzles would have any practical use. (01:21:10)
Revealing mistake: When our heroes are on the conveyor belt which carries the rocks towards the spinning saw blades, the rocks which get cut in two are seen to be cut before they reach the blades. (01:20:45)
Doctor Crow: I am Doctor Crow. You are surprised?
Daphne Honeybutt aka Agent Brown Cow: Yes, I am! I expected you to be a man... or a woman.
Trivia: This was the first Carry On to cast the fabulous Babs Windsor. Also the last to feature Bernard Cribbins until the making of Columbus in 1992.