Do Nothing ‘Til You Hear From Me is a ten-part BBC Radio 4 sitcom originally broadcast in 2004, written by British comic actor and writer Marcus Powell based on his Roy Diamond character. In the radio version, produced by Carol Smith, the cantankerous Jamaican stand-up comedian played by Powell was transformed into an equally cantankerous trombone player, Roy Walcott in series 1, then Don Warrington in series 2.