Continuity: When the peasant with a rock is trying to get past the two guards into the city in some shots there is a wooden pole between the guards and in other shots there isn't.

Revealing: When the Black Knight kills the King's champion with his axe, you can see the flash and smoke from the charge which blows the armour apart.

Continuity: In the armoury, when Dennis is trying to improve the efficiency of the riveters, the glove being riveted is only rotated in the close up shots. In the other shots they are hammering the rivets into the same hole every time.