He has also worked with a variety of other groups and artists including Albert Collins, Ginger Baker, Jack Bruce and Robben Ford in Los Angeles and internationally as a solo performer.
Keith Haring | Wyatt Earp | Keith Richards | James Wyatt | Keith Urban | Toby Keith | Keith Jarrett | Keith Emerson | Keith Moon | Keith Carradine | The Life and Legend of Wyatt Earp | Keith Sweat | Keith | Robert Wyatt | Countdown with Keith Olbermann | Keith Miller | Keith Giffen | Keith David | David Keith | Keith Whitley | Keith Park | Keith Olbermann | Keith Jardine | Keith Green | Keith Ellison | Brian Keith | Keith Thibodeaux | Keith Rothfus | Keith Lockhart | Keith Ellison (politician) |
Keith Wyatt, Jack Packer and Simon Heartfield continue to record as electronic act Seatman Separator.
From 1996 to date, Heartfield has concentrated on DJ work and solo composition, as well as on material with fellow Psylons members Keith Wyatt and Jack Packer in live electronic act Seatman Separator.