Wimbledon commentator David entered sports broadcasting as a freelance via BBC Wales in 1979 and joined BBC Radio Sport in London on full-time in 1984. He joined the BBC Television commentary team in 1992. Tennis has been his main sport since then, but he has also commentated and reported on football, rugby union, rowing, skiing, skating, badminton, snooker, squash, ice hockey and American football.

David, a former solicitor, was Welsh Junior Doubles champion in 1968, captained the tennis team at Nottingham University in 1969 and umpired the Wimbledon Men's Singles Final in 1984.