Theodore Bikel

Max

Eric Pohlmann

Steven Lasovich

Joyce Grenfell

Lady Flavia Queensway

Michael Hordern

Director of Customs

James Gilbert

Agent Larkins

Martin Boddey

Sub-Director Holt

Hal Osmond

Baggage Room Clerk

Jacques Brunius

Det. Pierre Valance

Ronald Adam

Mr. Bennett

Jill Adams

Michael's Dance Partner (uncredited)

John Arnatt

Customs Officer (uncredited)

Ballard Berkeley

Cooper

Jacques Cey

Little Frenchman

Cyril Chamberlain

Customs Officer

Philip Dale

A.P.O.

David Davies

(uncredited)

Guy De Monceau

Head Waiter (uncredited)

Arnold Diamond

French Customs Officer

Tom Gill

Montana Hotel Receptionist

Campbell Gray

Luigi

George Hilsdon

Police Driver (uncredited)

John Horsley

Customs Officer

Robin Hunter

A.P.O.

Douglas Ives

Seaman

Hamilton Keene

Cop at London Airport

Lloyd Lamble

Captain of Python

Terence Longdon

A.P.O. at Customs Launch

Denis Shaw

Ship's Cook

Campbell Singer

Sergeant Dodson, River Police

John Singer

Seaman

Philip Stainton

Seaburyness Police Sergeant

Herbert C. Walton

Old Man in Dungarees

Brian Wilde

Smuggler at Airfield

Joan Winmill Brown

W.S.O.