For anyone who was wondering when this was, I believe I may have found the answer. Just look at the dates for the members. First Countertenor: Jeremy Jackman 1980-1990 Second Countertenor: Alastair Hume 1968-1993 Tenor: Bob Chilcott 1986-1997 First Baritone: Anthony Holt 1970-1987 Bass: Colin Mason 1982-1987 So we can conclude that it was sometime in the range of 1986-1987 since Bob Chilcott joined in 1986 and both Anthony Holt and Colin Mason left in 1987. Hoped that helped :)
First Countertenor: Jeremy Jackman 1980-1990 Second Countertenor: Alastair Hume 1968-1993 Tenor: Bob Chilcott 1986-1997 First Baritone: Anthony Holt 1970-1987 Second Baritone: Simon Carrington 1968-1993 Bass: Colin Mason 1982-1987
