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

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.