 At the age of 18 he wrote the music for Michael Darlow's film "All These People" and then many scores for Anglia TV's television plays (under George More O'Ferrall) and then at the suggestion of Sir John Woolf joined Anglia Television full-time in 1961 as a researcher on Anglia Television's local programme "About Anglia".In 1967 he joined BBC Television in London as a producer on the award-winning progmme "Man Alive", edited by Desmond Wilcox.Clarke produced reporters Esther Rantzen, John Pitman, Joan Bakewell and James Astor.