Cast
Austin Trevor
Leopold Dryden
Lilian Oldland
Joan Dryden
Jack Hawkins
Herbert Evans
Ivor Barnard
Joseph Higgins (uncredited)
Peter Haddon
Guy Bannister
Betty Ann Davies
Poppy Levine
Bruce Lester
Peter Ridgwell (uncredited)
Robert Rendel
Sir Herbert Farquharson
Ian Hunter
Detective Inspector Gregory
Henry Kendall
Rodney Fleming
Val Gielgud
Julian Caird
Donald Wolfit
Sydney Parsons
Gordon McLeod
Chief Commissioner
Howard Douglas
Weisskopf (uncredited)
Arthur Hambling
Man on BBC Reception Desk (uncredited)