Revealing mistake: In the hotel meeting scene, the Grand High Witch tells the witches they can take their wigs off. When we see the newly bald witches, it is particularly obvious that only the foreground witches are ladies with bald caps - the rest of the witches are bald men. (00:30:10 - 00:31:00)
Trivia: A lot of the witches who attend the Grand High Witches meeting are actually men dressed in women's clothing.
Grand High Witch: This stinking little carbuncle has had five hundred doses! Aha, we are having Instantaneous action.
Question: After having so many disappointments over the way that Willy Wonka and the Chocolate Factory was filmed, Roald Dahl swore he would never be involved in any movie that was based on one of his books. How then was the rights to turn the novel "The Witches" into a movie acquired? Wouldn't the director have needed Roald's permission?