Rick Davies – vocals, keyboards, harmonica, composition (co-founder; 1970–1988, 1996–2002, 2010–2011)
Roger Hodgson – vocals, keyboards, guitars, bass guitar, cello, flute, composition (co-founder; 1970–1983)
Dougie Thomson – bass (1972–1988)
Bob Siebenberg – drums, percussion (1973–1988, 1996–2002, 2010–2011)
John Helliwell – saxophones, woodwinds, keyboards, synthesizers, backing vocals (1973–1988, 1996–2002, 2010–2011)
