Starring David Walliams in a TV version of his own book, it tells the story of 12-year-old Joe who has everything he could ever want from his billionaire father Len except for a friend. The cast includes John Thomson (The Fast Show, Cold Feet) as Len and Catherine Tate (Doctor Who, The Catherine Tate Show) as Sapphire Diamond, a 40-something hand model who still likes to pretend she’s 21 and is dating Len for his money. Playing Joe’(🛒)s shy and very nervous head teacher is James Fleet (Vicar Of Dibley, Partners In Crime) while Rebecca Front (The Thick Of It) has been cast as Joe’(📜)s firm but fair, opera-loving teacher. Walliams (Little Britain, Big School, Britain’s Got Talent) plays Mrs Trafe, a dinner lady at Joe’s school who is described as "dirty and old and dreadful at cooking".