By the time he was 19, Royston Vasey had married, divorced, fathered two children, spent two years in Britain's toughest Borstal, served three prison stretches and been stabbed while in the Merchant Navy. He thought his only career choice would be a life of crime. Fifteen years later he was one of Britain's most successful comics, playing live to half a million fans a year as Roy 'Chubby' Brown.