Throughout his career, Maitland has been involved with many West End musicals, and from 2005 onwards, he has been playing drums on the Mamma Mia!
Aside from these links listing professional drumming engagements, having trained at the Mackenzie School of Speech & Drama and taken LAMDA examinations regularly since the age of eight, between 1985 and 1993 Maitland became involved in theatre at Cambridge as an actor.
Also during this period he built up a practice of private percussion pupils and from 1989 took on various posts as a professional drum-kit teacher.
[3] In February 2009, it was announced that Maitland would play drums on Arjen Anthony Lucassen's latest project, Guilt Machine.
On 17 April 2011 in Zoetermeer, The Netherlands, Maitland was supposed to reunite on stage with former fellow Porcupine Tree's bass player Colin Edwin and no-man's singer Tim Bowness as part of the Memories of Machines project (a collaboration between Bowness and Giancarlo Erra of Nosound).