Roger Moore

Harold Pelham

Anton Rodgers

Tony Alexander

Olga Georges-Picot

Julia Anderson

Freddie Jones

Dr. Harris

Hugh Mackenzie

James Pelham

Kevork Malikyan

Luigi

Thorley Walters

Frank Bellamy

Ruth Trouncer

Miss Bird

Hildegard Neil

Eve Pelham

John Welsh

Sir Charles Freeman

Edward Chapman

Barton

Laurence Hardy

Mason

Charles Lloyd Pack

Jameson

Gerald Sim

Morrison

Aubrey Richards

Research Scientist

Anthony Nicholls

Sir Arthur Richardson

John Carson

Ashton

John Dawson

Barber

Alastair Mackenzie

Michael

James Payne

Taxi Driver (uncredited)