He was the third child of William Ernest Ball, a bank manager and Rosina whose other children were Marjorie, who died in 1980 and John, Thornton was his mother's maiden name and his middle name, He played the cello in his school's orchestra and was a corporal in the Officer's Training Corps which he left in1937 and became a clerk with the Guardian Insurance Company in London leaving to follow a colleague who'd left to be an actor and Frank thought he'd do the same and enrolled in the London School of Dramatic Art evening classes. In 1939 the school evacuated to Whitney in Oxfordshire. He went with them and still a student acted in the local repertory company which contained Peter Jones, In '1941 he was in the West End with Donald Wolfit and after that a year in The Scarlet #Pimpernel at Manchester Opera House where he met actress Beryl Evans, September '43 he was in the RAF and sent to Nova Scotia to train as a navigator, became a pilot officer and stayed on after the war in the entertainment unit with 3 corporals- Peter Sellers, Dick Emery and Tony Hancock. He was demobbed in 1947 and the same year in the musical The Dancing Years. Mid November 1950 he was compare on television's The Centre Show , a variety show in which Hugh Lloyd made his debut. Frank married Beryl on the 5th January 1945 and had a daughter, Jane in 1946 and lived in West Wickham in Kent