What was the conductor Ronnie Hazlehurst aporting when conducting Great Britain's 1977 entry in the Eurovision Song Contest?

Explanation

Ronnie Hazlehurst (1928-2007) was a British composer and conductor. He was the Musical Director of the Eurovision Song Contest the thre times it was held in Great Britain (1974, 1977 and 1982). He also conducted the British entry on 7 occasions (1977, 1982, 1987, 1988, 1989, 1991 and 1992. In 1977, he was wearing a bowler hat and used an umbrella to conduct with.