Lifeforce

Steve Railsback

Col. Tom Carlsen

Peter Firth

Col. Colin Caine

Frank Finlay

Dr. Hans Fallada

Mathilda May

Space Girl

Patrick Stewart

Dr. Armstrong

Michael Gothard

Dr. Bukovsky

Nicholas Ball

Roger Derebridge

Aubrey Morris

Sir Percy Heseltine

Nancy Paul

Ellen Donaldson

John Hallam

Lamson

John Keegan

Guard

Bill Malin

Second Vampire

Derek Benfield

Physician

Jerome Willis

Pathologist

John Woodnutt

Metallurgist

John Forbes-Robertson

The Minister

Peter Porteous

Prime Minister

Katherine Schofield

Prime Minister's Secretary

Owen Holder

First Scientist

Jamie Roberts

Rawlings

Russell Sommers

Navigation Officer

Patrick Connor

Fatherly Guard

Sidney Kean

Brash Guard

Paul Cooper

Second Guard

Chris Sullivan

Kelly

Burnell Tucker

N.A.S.A. Man

Chris Jagger

First Vampire

John Larroquette

Narrator (uncredited)

James Payne

NASA Man (uncredited)