Complex sentence: Chairman of the judges in 1973 was Peter Dimmock, Head of BBC Outside Broadcasts.Marjorie Wallace was fired on 8 March 1974, because she had failed to live up to the "first-class public image" of the position.
Split into simpler sentences: Chairman of the judges in 1973 was Peter Dimmock, Head of BBC Outside Broadcasts. The winner, Marjorie Wallace, was fired on 8 March 1974, because she had failed to live up to the "first-class public image" of the position.