James Coburn
Robert Elliot
Lee Grant
Jean Robertson
Harry Andrews
Albert Parsons
Ian Hendry
Alex Hellman
Michael Jayston
David Baker
Christiane Krüger
Christina Larsson
Keenan Wynn
E.J. Farnsworth
Terence Alexander
Business tycoon
Julian Glover
Arnold Pryce-Jones
Philip Anthony
Eliot's Secretary
Mary Larkin
Jean's Secretary
Ewan Roberts
Laboratory Technician
David Swift
Chester Drake
Rolf Wanka
Art Dealer
Ray Callaghan
TV Producer
Ralph Ball
Boy Friend
Brian Tully
Business Man
Michael Nightingale
Business Man
Richard Cornish
Co-Pilot
Susan Majolier
Laboratory Assistant
Carrie Kirstein
Air Hostess