Brogan-Moore
Col. Mathews
Dr. Vivian
Lord Willie Mounset
Pearson
Lord Hetherby
Andrew Coombes
Slartibartfast
Councilman
Sir Roland Hall
(voice)
Sir Edward Seabrook
Manager
Suspect
Dr Whitman
Colonel
Race Course Official (uncredited)
Leading man in play
Chairman of the Board of Governors (uncredited)
Sir Edward Gait
Sir Lionel Hibury
Smithers
Man on Train
Dr. Edwards
Heraclius
Miriam's father
Professor Krempe
Prime Minister
Flewitt
Lord Bartlesham
Professor Jerry Coe
Colonel Hebron
Dr. Aldrich
Uncle Felix
Aged Professor
Sir John Hargreaves
Lord Brisburn
Roddinghead
The Marquess of Winchester
Doctor at Crime Scene
Fassbender
Lewis
Makato
Government Official at Enquiry (uncredited)
Quimby Charles
Mr. Becket
Sir Maxwell Dean
Edgar Hargraves
Mr. Price
Sir Nicholss Fanner
Under Secretary
Gentleman
George Cornfield
Stanley
Colonel Loring
Slartibartfast
Sir Maxwell Dean
Pa Stone
Roger Nettleton
Brogan-Moore
King
Major Smith-Barton
Sir Nicholas Fanner
Sir Hector Rose
Merchant
Major Cochrane-Danby
Mr. Endworthy
George Cornfield
Sir Richard McKenzie
Mr. Pascoe
Dr. RIchard Payton
Mr. Fellowes
Lord Bartlesham
Mr. Pott
Lord Dunstable
Admiral Croft
Lord Tilling
Sir John Ripwell
Lord Matterley
Oldenshaw
Mr. Garstanton
Lewis
Mr. Price
Edwin Oldenshaw
Duncan Anderson
Suspect
Roland Tolhurst
The Earl of Swaffham
Mr. Pott