Muggingly overacted by a star-studded cast, and filmed in a mix of flat, scuzzy, Day-Glo colours, this film is based on the children's books featuring an irrepressibly naughty little boy (played by Theo Stevenson) with long-suffering parents and a goody-two-shoes younger brother. No less a figure than Anjelica Huston plays Henry's teacher Miss Battleaxe; Rebecca Front is his querulous headteacher Miss Oddbod and Richard E Grant plays the evil head of a local private school trying to drive Henry's feisty underdog comp out of business. Horrid Henry is an inexpensive-looking knockabout comedy of a sort perhaps enjoyed by kids who are appreciably younger than those at which the film is apparently aimed. At the end of it all, you might find yourself wondering at the embarrassment of riches in terms of acting talent. And yet a great deal of this talent seems to go for little or nothing. A wasted opportunity.