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)
Continuity mistake: When Edmund speaks with the White Witch the first time, as he eats the Turkish Delight candy, the amount and pattern of powdered sugar that remains on his lips differs in the following shots, depending on camera angle. (00:31:10)
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: Before filming the Narnia scenes, Georgie Henley was never shown the set. To get a genuine reaction of surprise, director Andrew Adamson had Henley brought onto the Narnia set blindfolded. Her reactions to Mr. Tumnus are real, too. Before filming their scenes together, she had never seen James McAvoy in costume.