Oskar Homolka as Desius Heiss

Derek Farr as Robert Graham

Muriel Pavlow as Margaret Heiss

Manning Whiley as Corder Morris

Diana Dors as Mildred

Kathleen Harrison as Mrs. Catt

Garry Marsh as Major Elliot

Kenneth Griffith as Archie Fellows

Jan Van Loewen as Professor Vanetti

Johnnie Schofield as Inspector Robson

Irene Handl as Ruby Towser

Katie Johnson as Woman in Shop

Vi Kaley as Flower Seller

David Keir as Gentlemen Customer

James Knight as Publican

Eliot Makeham as Theatre Usher