Rex Brough aka King John and the Red King (born 1960 in Meriden, Warwickshire) is an English record producer and editor of radio programmes, mainly for the BBC.His production work includes UK Top 40 hits for Bomb the Bass, Betty Boo and Definition of Sound. After a brief time as a session musician, mainly for Pookah makes 3, he became live sound engineer for Harvey and the Wallbangers.