 Kneale is the younger brother of the screenwriter Nigel Kneale (1922–2006), best known for his "Quatermass" television serials.Kneale illustrated the covers for Penguin Books' releases of his elder brother's "Quatermass" scripts in 1960.He was also responsible for a painting of a lobster from which BBC special effects designers Bernard Wilkie and Jack Kine drew their inspiration for the Martian creatures they constructed for "Quatermass and the Pit" (1958–59).