2011, 90 minutes
Studio production based in twikenham
Horrid Henry (Theo Stevenson) is too busy dreaming about being a rock star and fending off his little brother Perfect Peter (Ross Marron) to do his homework. Naturally, this gets him into all kinds of trouble. His teacher, Miss Battle-Axe (Anjelica Huston) promptly puts him in detention. It is revealed that Ashton Primary, the school Henry attends, is to be closed and Vic Van Wrinkle (Richard E. Grant), the headmaster of Brick House School, stands to make a fortune from the resulting influx of pupils. With the help of his worst arch-enemy Moody Margaret (Scarlett Stitt), Henry comes up with a plan to save the school, to avoid having to deal with the new school fees. Henry goes on a show titled ''2 Cool 4 School'', competing for a cash prize which he can use to save the school. After he wins the show, Henry stops the head-teacher of Ashton Primary to sign the closure-papers, and Peter, unknowingly of Vic Van Wrinkle, ties his shoes up, and calls the police who listen to all his plans. Ashton Primary is saved, whereas Vic Van Wrinkle and his partners are sent to jail.