Other mistake: After Stanley becomes the nun he demands one more wish, but George informs him that the ice lolly he got as a trial wish counted - which had cost him sixpence, and which George then pays him back. However, on the Post Office Tower, after Stanley saying he'd like to see what Margaret is doing, George lends him a telescope (also costing Stanley sixpence) which is then forgotten about when George reminds Stanley about the ice lolly. (01:30:00)
Other mistake: King Arthur is on the far right of the scene as Guinevere is led away by the guards and he nods at someone off camera, asking them if it's OK to start acting as the camera moves around.
Other mistake: The copyright date is 1967. In the final title frame at the end of the movie, the copyright date in Roman numerals is incorrect. The V and the X are inverted. It reads MCMLVXII. The correct Roman numeral is MCMLXVII.
Other mistake: When Spencer Tracy is shaving someone's arm appears onscreen at the right. (01:07:12)
Other mistake: After a night of drinking ouzo, Corie asks Victor if she'll have much of a hangover, not having drunk ouzo before. Victor says no the hangover, but she won't be able to make a fist for 3 days, and when she tries, she can't make a fist, but seconds before Victor spoke, Corie did make a fist, a big one.