In 1993 Gillan landed the role of Benjamin in the first national tour of Joseph and the Technicolour Dreamcoat and left Arts Educational in Chiswick, to start his career.
[2] Gillan, who attended Bellarmine Secondary School in Glasgow's Pollok area,[2] was nominated for a 1997 Laurence Olivier Theatre Award for Best Supporting Performance in a Musical of 1996 for his role in Tommy.
[2] Other nominations include a TMA for best performance in a musical with the other company members of Stephen Sondheim's Assassins (Sheffield Crucible), playing John Hinckley Jr. Gillan is the brother of George Paterson of the Scottish rock group DMP.
[citation needed] Other TV credits include Casualty, Doctors, The Seven Industrial Wonders of the World and the CBS concert of A Tale of Cities.
From November 2010 through January 2011, Gillan played the role of Colin in the musical adaptation of Frances Hodgson Burnett's classic children's novel The Secret Garden.