Dennis Peterson: Bass, Vocals (November 1972 - June 1983).

Arthur Green - Bass, Vocals (1999-2003, and 2008-present)

John Munson - Bass, Vocals.

Mark Clarke - Bass, Vocals (from 1970)

Paul Gregg: Bass, Background Vocals, Lead Vocal (tracks 1, 5 & 8)

Tony Robertson : Bass, Vocals (1982-86, 2007- )

Dave Phillips - Bass, Vocals (1987 - April 1988)

Chris Anderson - Bass, Vocals on "Wake Up"

Peter Gifford: Bass, Vocals (All tracks except 1, 14)

Dave Morgan - Bass, Vocals (on Tracks 1 - 4)