Will Hay
Dr. Benjamin Twist
Martita Hunt
Lady Bogshott
Fewlass Llewellyn
The Dean
Mark Daly
Arty Jones
C. Denier Warren
Minister of Education
Will Hay Jr.
Clarence
Basil McGrail
Watson
Jacques Brown
Manager
Lewis Broughton
Dr. Simpson (uncredited)
Richard Todd
Extra in crowd scene (uncredited)
Clive Dunn
Minor Role (uncredited)
Lilli Palmer
Yvette
Graham Moffatt
Albert Brown
Peter Gawthorne
Col. Willougby-Gore
