Jack Warner

Maj. Alec White

Nigel Patrick

Insp. Michael Kenyon

Elizabeth Sellars

Rita Compton

Terence Morgan

Roger Compton

Greta Gynt

Mme. Simonetta

Theodore Bikel

Max

Eric Pohlmann

Steven Lasovich

Joyce Grenfell

Lady Flavia Queensway

Michael Hordern

Director of Customs

Martin Boddey

Sub-Director Holt

Ronald Adam

Mr. Bennett

John Arnatt

Customs Officer (uncredited)

Ballard Berkeley

Cooper

Cyril Chamberlain

Customs Officer

David Davies

(uncredited)

Arnold Diamond

French Customs Officer

John Horsley

Customs Officer

Robin Hunter

A.P.O.

Lloyd Lamble

Captain of Python

Terence Longdon

A.P.O. at Customs Launch

Nicholas Phipps

Royal Navy Information Officer

Campbell Singer

Sergeant Dodson, River Police

John Singer

Seaman

Brian Wilde

Smuggler at Airfield