Here's another former choir member, only it wasn't Libera or even Angel Voices yet.
In 1970 a then 18-year-old Robert Prizeman became the choir director at St. Philip's Church, Norbury. Three of the boys from that early St. Philip's Boys' Choir went on to place in the Choirboy of the Year competition. Jonathan King was a finalist in 1976. Vincent Penfold was a finalist in 1982. And Andrew Hopkins won Choirboy of the Year in 1981.
This is a video of Andrew singing "O For the Wings of a Dove" on a TV show called Sunday Best in 1982. And it's kinda cool because he uploaded it to YouTube himself! :D
Have to say I like the white robes they wear now waaaaay better! :)