George Nader
— Paul Gregory
Maggie Smith
— Bridget Howard
Bernard Lee
— Victor Sloane, alias Lee Henderson
Geoffrey Keen
— Inspector Scott
Bessie Love
— Harriet P. Jefferson
Harry H. Corbett
— Sullivan
Andrée Melly
— Rosa, cocktail waitress
Lionel Jeffries
— Pet Shop Owner (uncredited)
Barbara Hicks
— Agnes
George Hilsdon
Glyn Houston
— Box office clerk
Noel Howlett
— Uncle Tom Howard
Oliver Johnston
— Mr. Hobbs, vault official
Lily Kann
— Anna Berg
Harry Locke
— George Bendel
Howard Marion-Crawford
— Mac Cameron, club owner
Lane Meddick
— Welsh garage attendant
Charles Price
Maggie Rennie
— Mary
Guy Standeven
John Welsh
— Second Mr. Dodds
Arthur Howard
— First Mr. Dodds