Career
Gregory was the lead guitarist of XTC, from immediately prior to the recording of the Drums and Wires LP in 1979, when he replaced founding member Barry Andrews, to his eventually leaving the band in 1999. He also contributed keyboards and backing vocals to their work. Since leaving XTC Gregory has been much in demand as a session musician with a number of artists, including Peter Gabriel, Aimee Mann, Cud, Marc Almond, Bingo Durango, Johnny Hates Jazz, Jason Donovan, Martin Newell, Louis Philippe, Lulu, Mark Owen, R. Stevie Moore and others
Gregory, who has been regularly involved in Steve Hogarth"s h-Band, has also contributed to works by Porcupine Tree, including string arrangements on their sixth album, Lightbulb Sun, and for Dublin group Pugwash.
On 16 August 2009, English progressive rock band Big Big Train announced on their official blog that Gregory would be appearing as a guest musician on their sixth studio album, The Underfall Yard. Gregory subsequently appeared on Big Big Train"s Far Skies Deep Time European Parliament and is listed as a full band member on English Electric Participant One (2012).
The band releases their first album, Wired to Earth, on 1 April 2011. Tin Spirits supported Marillion during the Marillionweekend at Portuguese Zélande on 27 March 2011 in the Netherlands.
Gregory also guests on the 2012 album Not the Weapon but the Hand by Steve Hogarth and Richard Barbieri.
In 2013, Gregory contributed to the book 1001 Guitars to Dream of Playing Before You Die. Gregory suffers from diabetes. In 2004 retinopathy threatened to end his career but he has since made a full recovery.