1977-1978
- Richard Butler (Butler Rep): vocals
- Tim Butler: bass
- Roger "Dog" Morris: guitar
- Duncan Kilburn: saxophone, keyboard
- Simon Butler: guitar
- Paul Wilson: drummer
1979
- Richard Butler (Butler Rep): vocals
- Tim Butler: bass
- Roger Morris: guitar
- Duncan Kilburn: saxophone, keyboard
- Rod Johnson (until 7/79): drummer
- Vince Ely : drums
- John Ashton: guitar
1980-1981
- Richard Butler: vocals
- Tim Butler: bass
- Roger Morris: guitar
- Duncan Kilburn: saxophone, keyboard
- Vince Ely : drums
- John Ashton: guitar
1982
- Richard Butler: vocals
- Tim Butler: bass
- Vince Ely (left after the release of "Forever Now"): drums
- John Ashton: guitar
- Gary Windo: saxophone
- Ann Sheldon: cello
- Phill Calvert (during the "Forever Now" tour): drums
- Ed Buller: keyboard
1983
- Richard Butler: vocals
- Tim Butler: bass
- John Ashton: guitar
- Gary Windo: saxophone
- Mars Williams (filled in for the Australian leg of the tour & played along with Gary Windo on the final American leg): saxophone
- Ann Sheldon: cello
- Phill Calvert: drums
- Ed Buller: keyboard
1984
- Richard Butler: vocals
- Tim Butler: bass
- John Ashton: guitar
- Mars Williams: saxophone
- Ed Buller: keyboard
- Paul Garisto: drums
- Mike Mooney: guitar
1986-1987
- Richard Butler: vocals
- Tim Butler: bass
- John Ashton: guitar
- Mars Williams: saxophone
- Paul Garisto: drums
- Roger O'Donnell (left before the end of the tour in 1987): keyboard
- Marty Williamson: guitar
- Joe McGinty (filled in for Roger O'Donnell): keyboard
1988-1990
- Richard Butler: vocals
- Tim Butler: bass
- Vince Ely: drums
- John Ashton: guitar
- Joe McGinty: keyboard
- Knox Chandler: guitar, cello
1991-1992
- Richard Butler: vocals
- Tim Butler: bass
- Vince Ely: drums
- John Ashton: guitar
- Joe McGinty: keyboard
- Knox Chandler: guitar, cello
- Don Yallech: drums
2000-2001
- Richard Butler: vocals
- Tim Butler: bass
- John Ashton: guitar
- Earl Harvin: drums
- Richard Fortus: guitar
2002-2009
- Richard Butler: vocals
- Tim Butler: bass
- John Ashton: guitar
- Amanda Kramer: keyboards
- Frank Ferrer: drums
- Mars Williams (as of 2005): saxophone
2009-2020
- Richard Butler: vocals
- Tim Butler: bass
- Rich Good: guitar
- Amanda Kramer: keyboards
- Mars Williams: saxophone
- Paul Garisto: drums
2021-2023
- Richard Butler: vocals
- Tim Butler: bass
- Rich Good: guitar
- Amanda Kramer: keyboards
- Mars Williams: saxophone
- Zack Alford: drums
2024
- Richard Butler: vocals
- Tim Butler: bass
- Rich Good: guitar
- Richard Fortus: guitar
- Amanda Kramer: keyboards
- Zack Alford: drums