Alastair Sim as Sir Norman Barker

Ronald Shiner as Dicky Bird

Claire Bloom as Susan Robbins

Margaret Rutherford as Gwladys Inglott

Jimmy Edwards as Captain George Stilton

Frank Muir as Stilton's friend

Christopher Lee as Lieutenant Whitlock

Kenneth Williams as Window Dresser at London Airport

Louis de Funès as Célestin, le chauffeur de taxi

Laurence Harvey as Francois

Claude Dauphin as Max de Lorne

Mara Lane as Gloria Delaney

James Copeland as Andy MacGregor

Gaby Bruyère as Josette

Monique Gérard as Raymonde

Peter Illing as Panitov

Colin Gordon as Customs officer

Kenneth Kove as Bickerstaff

Philip Stainton as Nobby Clarke

Peter Jones as Langton

Stringer Davis as Arbuthnot

Richard Wattis as Wilkinson

Albert Dinan as Louvre doorman

Georgette Anys as Madame Célestin

Grégoire Aslan as Carpet seller

Reginald Beckwith as Photographer

Joan Benham as Receptionist

Max Dalban as Butcher

Hamilton Keene as Reporter

Andreas Malandrinos as French customs officer

Bill Shine as Customs officer

Toke Townley as Airport porter