Cliff Robertson

David Frazer

Jack Hawkins

Colonel Drexel

Marisa Mell

Sophie

Michel Piccoli

Georges Sarrassin

Bill Fraser

Leslie Dunwoody

Charles Gray

Benson

John Le Mesurier

Sir Robert

Felix Aylmer

Henrickson

Tutte Lemkow

Paviot

Ernest Clark

Minister

Roger Delgado

Ahmed bin Fayed

Jerold Wells

Brindle (uncredited)