According to Wikipedia: "Royston Clarke OBE (born 28 January 1930), usually known as Roy Clarke, is an English comedy writer best known for creating the sitcoms Last of the Summer Wine, Keeping Up Appearances, Open All Hours and its sequel series, Still Open All Hours.
Clarke was born in Austerfield in the West Riding of Yorkshire. His jobs before becoming a writer included teacher, policeman, taxi driver, salesman and he was a soldier in the Royal Corps of Signals of the British Army.
In the late 1960s Clarke wrote thrillers for BBC Radio. The first in January 1968, The 17-Jewelled Shockproof Swiss-Made Bomb, featured Peter Coke, Ben Kingsley, Bob Grant and Anne Stallybrass. A couple of months later. The Events at Black Tor was a police thriller which also featured Bob Grant along with James Beck.