Oliphant
Chauffeur (uncredited)
First murderer
Chef
Surveillance Detective at Window
Plain Clothes Detective
Bellamy
Engineer
Market Supervisor
Compere
Lassiter
Sergeant
Bowes
Police Sergeant
Landlord 'Magdala'
Detective Parker
Chemist
Bernard
The Policeman
Duty Sergeant
Letts
Cyril
Prisoner
James Mellish
Eric Brigshaw
Khomyakov
Yorky
The Radio Expert
Potter