Continuity mistake: When Dr. Goode is sitting on the settee with Matron in her bedroom, he pours a drink for himself. But when he says "Cheers!" to Matron, they both have filled glasses.
Audio problem: When Cyril says "I'm coming!" to Dr Prodd whilst travelling in the ambulance, the words do not match his lips.
Continuity mistake: When Matron tells Mrs Tidey that her husband is getting very impatient while she is eating her lunch, Matron puts her hand on a lid on the tray, but when we see Mrs Tidey eating in the next shot, there is no hand on the lid.
Continuity mistake: When Cyril walks out of the bedroom with his nurse's outfit on, there is a sign on the wall saying "You may telephone from here." In the long shot, the sign is totally uncovered, but in a close-up, part of the sign is obscured by the slot machine.
Audio problem: When Matron says "Give it to me" to Freddy after Sid and his gang have been captured at the end of the film, her lips aren't moving.