William appeared in the "Jesus Christ Superstar" in the West End before taking over the role of "Jesus" for the National Tour aswell as Ireland and Germany. William appeared as "Thorin Oakenshield" in the acclaimed stage adaptation of "The Hobbit" the Queens Theatre in the West End and on National Tour.
William has also worked with Anthony van Laast starring as "Berger" in his production of "Hair"
Prior to this, William has starred in many other stage musicals "Emcee" in "Cabaret", "Joseph" in "Joseph and the amazing technicolor dreamcoat" "The Arbitor" in "Chess", "Bob Cratchit" in "Scrooge".

Recording:
"Jesus Christ Superstar" - Origenal Cast Album
"Scheherazade" - Conceptual Recording
"The Beautiful Game" - Conceptual Recording
"Rugby World Cup 1998" Theme Song

Concerts:
A Night of Musical Magic 1996, RTE Eurosong 1996, Proms Season 1997 (Hooray for Hollywood), Proms Season 1998 (Music of James Bond), Proms Season 1999 (Sounds of the Oscars) all for RTE with the National Concert Orchestra
New Years Ball 1999 / 2000, Lyric FM live from Limereck University College with the National Symphony Orchestra.

Live Television Performances;
"Casino Casino" - Presenter on Casino based Gameshow. Challenge TV. Two Series. 26 episodes.
Solo performance appearances on Ryantown, The Late Late Show, The Pat Kenny Show, Nighthawks - RTE,
Solo performance on Midlands Live - Tyne Tees Television
Performace on National Fundraising Programme Performance for TV1 (Norweigan Television)