(1996 - 2001) Songwriter for the primarily electronic musical project I.E.M. (Incredible Expanding Mindfuck.)
(1994-present) Songwriter for the dark ambient project Bass Communion.
(1987-present) Founding member and lead guitarist of the British art rock band No-Man, with vocalist Tim Bowness.
(2001-present) Half of the art rock duo Blackfield, with Israeli rock star Aviv Geffen, in which both alternately share lead vocals, songwriting, guitar and keyboards.
(1987 - 2010) Founder, front man, lead singer, lead guitarist and primary songwriter for the UK progressive/ambient/metal rock group Porcupine Tree.
(2017) Remixed Marillion's classic 1985 album "Misplaced Childhood" in 5.1 surround sound.