Continuity mistake: In the scene where Kenneth Williams is "admiring the view" by Bernard Bresslaw's caravan, when Bernard goes back into his caravan the awning tent outside the door has disappeared. It is there throughout the rest of the film.
Continuity mistake: After Professor Crump and Professor Vooshka have finished inspecting the mosaic at the bottom of the cesspit, Professor Crump helps Professor Vooshka out of the pit. Initially Professor Vooshka starts out of the pit by leading with her right leg, but in the next shot, she is leading with her left.
Revealing mistake: When Fred and Ernie are checking for signs of life on Professor Crump whilst he is lying in bed unconscious, the 'unconscious' Crump blinks and moves his eyes several times.
Continuity mistake: When Ernie tosses the burnt sausages out of the caravan, he tosses them out of the back window. When we see the dog eating the sausages, he is eating them by the caravan door.
Continuity mistake: Before the chicken is run over by the archaeologists' van, the appearance of the chicken changes between shots.
Audio problem: When Sandra says "It's warm, isn't it?" before she takes off her jumper, her mouth is not moving.
Continuity mistake: When Ernie asks Sandra and Carol if they would like to have dinner with him and Fred, he is holding the cup and saucer in his right hand. In the next shot, he now has both hands on the saucer.
Continuity mistake: During the breakfast scene with Fred, Ernie, Carol and Sandra, Carol puts her hand on Ernie's hand while he is eating his cornflakes and then puts her hand back on the table, but in the following shot her hand is back on Ernie's hand again.
Continuity mistake: When Barnes leaves his caravan after discussing the rent with Professor Crump and Professor Vrooshka, Professor Vrooshka is holding a large knife, but in the next shot she is now holding a briefcase.
Continuity mistake: When Daphne tells Arthur that she won't have swearing after he hits his hand with the mallet, Arthur kicks down the awning on the caravan. At this point, Arthur is holding a mallet, but in the next shot when he is happy and rubs his hands together, the mallet is nowhere to be seen.
Continuity mistake: At the beginning of the stripper film during Professor Crump's lecture, you can see the stripper is wearing tights. When Crump says "We see the sight partially uncovered", the tights have disappeared, and in the next shot, they are back again.
Continuity mistake: When Else enters the butchers' shop at the beginning of the movie, Fred is serving a woman wearing a scarf on her head and behind her is a blonde haired lady. But when Fred says "Hello, Else!" in the next shot, the blonde lady has just been served by Fred and the woman with the scarf is nowhere is sight.
Continuity mistake: When the couple who are about to have their lunch outside their caravan are interrupted by the beach ball, the ball knocks a brown bowl containing salad off the table. After a quick cut to Fred, we return to the couple and the bowl is back on the table again.