Sharp worked as a presenter at BBC Radio 1, mixing holiday cover for other radio presenters with a regular early Sunday morning slot and a number of television appearances hosting BBC1's "Top of the Pops". He deputised for David Jensen on "The Network Chart Show". In the mid-1980s he became a DJ for Radio Mercury and has also worked for the British Forces Broadcasting Service. For 10 years, starting in 1987, Sharp was a DJ on Capital FM in London. followed by another 11 years at Heart, both in London and Cambridge.