Derrick De Marney
— Slim Callaghan
Harriette Johns
— Cynthia Meraulton
Adrienne Corri
— Mayolo
Robert Adair
— August Meraulton
Delphi Lawrence
— Effie Perkins
Michael Balfour
— Coffee Stallkeeper
Larry Burns
— Darky
Michael Partridge
— Jengel
Howard Douglas
— Tweest
Trevor Reid
— Inspector Gringall
Frank Sieman
— Sergeant Fields
John Ainsworth
— P.C. Masters
Brenda Gay
— Secretary of William Meraulton
Peter Neil
— William Meraulton
John Miller
— Manservant
Roger Williams
— Bellamy Meraulton
Belinda Lee
— Jenny Appleby
Robert Moore
— Nightclub Manager
Alex Gallier
— Compere (as Alex De Gallier)
John Longden
— Jeremy Meraulton
Frank Henderson
— Paul Meraulton
Doug Robinson
— Man (uncredited)