Continuity mistake: During the duel between Miraz and Peter, when they call for a time out, Miraz is shown in the background walking back to his generals and stepping onto a raised area. A few seconds later, over Peter's shoulder, he again walks to the raised area and steps up (there's only one step). (01:44:55)
Continuity mistake: When Peter is talking to the White Witch, he has a deep cut above his left eye. when the camera changes to show Edmund stabbing the Witch from behind, Peter is miraculously healed, because in the next screen is Peter sitting down, breathing hard. But look above his left eye. No cut.
Visible crew/equipment: Near the end, when Peter bows before Aslan, the giant lion isn't visible in the reflection of Peter's sword, but the crew is. (02:11:00)
Continuity mistake: When Caspian is talking to the Badger and Dwarf in the cave, the Badger puts a bowl of soup (on a tray) on the table. The camera cuts to Caspian, and when it cuts back, the tray and soup are both gone.
Other mistake: After the trees wake up when the General is saying that they can still win if they retreat to the river, in the background there is a catapult that picks up a rock and never goes high enough to throw the rock or drop it, but when it comes back down, the rock is missing.