Cast
George Rose
Slob
Ralph Truman
Colonel Blenkinsop
Jack Hawkins
Supt Tom Halliday
John Stratton
Sergeant Ward
Sam Kydd
Police Constable in Information Room
Nicholas Parsons
Police Constable Bates
Roy Purcell
Glyn Houston
Detective Sergeant in 'Q' car
Peter Burton
Creasey
Meadows White
Harry Locke
Secondhand Dealer
William Mervyn
Manager of Festival Hall
Stratford Johns
Constable (uncredited)
Ian Bannen
The Young Workman - Stanley James
George Holdcroft
Robert Moor
Richard Davies
Detective (uncredited)
Peter Welch
CID Man (uncredited)
Sydney Tafler
Stone
Barry Keegan
Detective Constable in Hospital Ward
David Davies
Welsh Police Constable
David Lodge
Detective at Car Lot (uncredited)
Frazer Hines
Urchin (uncredited)
Pat Ryan
Richard Leech
Nightwatchman / Gilson
Harold Goodwin
Official at Somerset House
Maureen Delaney
Mrs. Stevens, the daily help
Dorothy Alison
Mary Halliday
Martin Wyldeck
Officer in Criminal Records Department (uncredited)
Jack McNaughton
John Welsh
House Agent at Shepperton
Jameson Clark
Detective Superintendent Ogilvie
Vincent Ball
P.C. at Hospital (uncredited)
John Paul
Arthur Rigby
Detective Inspector at Chester
Maureen Davis
The Young Workman's Wife - Mrs. James
Meredith Edwards
Mr. Thomas
Guy Standeven
Detective (uncredited)
Frederick Treves
Detective tailing Creasey (uncredited)
Geoffrey Keen
Chief Superintendent Jim Malcolm
Joss Ambler
Cashier at Shipping Office
Fred Griffiths
Alec McCowen
House Surgeon