Patrick Macnee

Derek Longbow

Edward Woodward

Dr. Holstrom

Alexander Davion

Tony Seymore

Peter Cushing

Dr. Walter Goodrich

Johnny Sekka

Bob Kirby

Madeleine Hinde

Penelope

William Mervyn

Marc Honeydew

Patrick Mower

Richard Fountain

David Lodge

Colonel

Imogen Hassall

Chriseis

Valerie Van Ost

Don's Wife

Françoise Pascal

Girl at Orgy (uncredited)

Marianne Stone

Cheerful Lady at Party (uncredited)

Julian More

Robert Hartford-Davis