Cesar Romero

as Luigi

Kay Kendall

as Barbara Gale

Victor Maddern

as Danny 'Limpy' Thomas

Edward Underdown

as Det. Insp. Johnstone

Simone Silva

as Angele Abbé

Liam Gaffney

as Constable Fred Roberts

Bill Travers

as Nigel Langley - Barbara's date

Molly Hawley-Clifford

as "Starry" Darryl

John Penrose

as Gerald Gale

Robert Cawdron

as Det. Sgt. Hadley

Henry Purvis

as Starry's Brother

Paul Hardtmuth

as V. H. Mayall

Eileen Way

as Mrs. Thoms

Tony Sympson

as Nicky the Burgler

Fred Griffiths

as Cabbie

Jack Howarth

as Limpy's Landlord

Harry Purvis

as Darrell

Rose McLaren

as Rose

Howard Lang

as Card Player (uncredited)