 In the early 1950s Kneale met fellow BBC screenwriter Judith Kerr , a Jewish refugee , in the BBC canteen . They married on 8 May 1954 and had two children ; Matthew , who later became a successful novelist , and <unk> , an actress and later a special effects designer who worked on the popular Harry Potter series of films . Kerr became a successful children 's writer , with the Mog series of books and When Hitler Stole Pink Rabbit , which was based on her own experiences of fleeing Nazi Germany in her youth . Kneale worked with Kerr on an adaptation of When Hitler Stole Pink Rabbit in the 1970s , but the eventual makers of the film version disregarded their script . Similarly , in 1995 Kneale scripted a four @-@ part adaptation of one of Kerr 's sequels to the book , A Small Person Far Away , but this also went unproduced . 
