Audio problem: When they're standing on the breaking ice, as Peter points his sword at Maugrim, Susan shouts, "Look, just because some man in a red coat hands you a sword doesn't make you a hero. Just drop it." In the very next shot (we still see Susan's profile, despite the side shot), Susan's lips/jaw are moving, but nothing is heard, which occurs just as Peter quickly glances at her and we also hear Beaver shout, "No, Peter!" (01:14:15)
Visible crew/equipment: When Mrs. MacReady meets the Pevensie children at the train station, the reflector screen is reflected in the lenses of her glasses, as she looks down when she speaks to them. It is also visible when the children first arrive at the house, when Mrs. MacReady says, "There shall be no disturbing of the professor." (00:07:30)
Professor Kirke: What were you all doing in the wardrobe?
Peter Pevensie: You wouldn't believe us if we told you, sir.
Professor Kirke: Try me.
Trivia: After the initial credits begin (since many people leave the theatre as soon as the credits appear, they miss this), there is an additional short scene between Professor Kirke and Lucy, that takes place near the wardrobe. (02:12:25)