Lineupsbr 1969–1970 br br * David Byron – vocalsbr * Mick Box – guitarbr * Ken Hensley – keyboardsbr * Paul Newton – bass guitarbr * Alex Napier – drumsbr br 1970 br br * David Byron – vocalsbr * Mick Box – guitarbr * Ken Hensley – keyboardsbr * Paul Newton – bass guitarbr * Nigel Olsson – drumsbr br 1970 br br * David Byron – vocalsbr * Mick Box – guitarbr * Ken Hensley – keyboardsbr * Paul Newton – bass guitarbr * Keith Baker – drumsbr br 1970–1971 br br * David Byron – vocalsbr * Mick Box – guitarbr * Ken Hensley – keyboardsbr * Paul Newton – bass guitarbr * Iain Clarke – drumsbr br 1971–1972 br br * David Byron – vocalsbr * Mick Box – guitarbr * Ken Hensley – keyboardsbr * Mark Clarke – bass guitarbr * Lee Kerslake – drumsbr br 1972–1975 br br * David Byron – vocalsbr * Mick Box – guitarbr * Ken Hensley – keyboardsbr * Gary Thain – bass guitarbr * Lee Kerslake – drumsbr br 1975–1976 br br * David Byron – vocalsbr * Mick Box – guitarbr * Ken Hensley – keyboardsbr * John Wetton – bass guitarbr * Lee Kerslake – drumsbr br 1976–1979 br br * John Lawton – vocalsbr * Mick Box – guitarbr * Ken Hensley – keyboardsbr * Trevor Bolder – bass guitarbr * Lee Kerslake – drumsbr br 1979–1980 br br * John Sloman – vocalsbr * Mick Box – guitarbr * Ken Hensley – keyboardsbr * Trevor Bolder – bass guitarbr * Chris Slade – drums