Revealing mistake: When Edward opens the gate to let Tracy in, we then see a shot of Tracy and you can see it is repeated footage of her from when she met Edward for the first time.
Other mistake: In the end credits, Juliet Waley is credited as "Juliet Way."
Visible crew/equipment: When Bunce catches Tracy and Towser hiding in the coach, the boom mic can be seen at the top of the screen.
Visible crew/equipment: When Miss Hawk is speaking to Edward by the well, the boom mic can be seen in the top right of the screen.
Continuity mistake: When Edward and Tracy open the lid of the chest in the tower, Benger puts his hand on Tracy's shoulder and Edward has both his hands on the lid. In the next shot, he now has one hand on it.