Monty Clayton
Mr Horrobin
Sir Montague Corner
Lord Redesdale
Chartermain
Peter Montrose (‘Murder at Midnight’)
Dickie Melborne
Stanley
Coroner
Jarvis
The Lawyer
Belton
Hindsmith
Wilkins
Colonel Scuttling - Scotland Yard Man
Det. Thompson
Immigration Officer
Mr. Ballard
George Aisgill
German Technical Examiner
Cavendish
Smythe
Jenkins
Housemaster
Member of Whitehall Conference
Mr. Eccles
Bodley
Wilkie (uncredited)
Da Silva
Superintendent Symington
Randolph St. John
Sylvan-Jones
Captain Patterson
Maj. Baker
Capt. Eric Simpson
Capt. Christopher Connaught-Smith
British Lieutenant
Philip
George Aisgill
Foley
Guards Officer
Brigadier's Staff Officer
Police Inspector
Chailey
Captain Donaldson
Dr. Stevenson
Det. Inspector
Colonel Packham
Vice-Admiral
First Gentleman
Clifford
Jonathan Redgrove
Henry Carmichael
Lt. Col. Henniker
