Robert Donat
Role: Sir Robert Morton
Cedric Hardwicke
Role: Arthur Winslow
Margaret Leighton
Role: Catherine Winslow
Basil Radford
Role: Desmond Curry
Kathleen Harrison
Role: Violet
Francis L. Sullivan
Role: Attorney General
Marie Lohr
Role: Grace Winslow
Jack Watling
Role: Dickie Winslow
Walter Fitzgerald
Role: First Lord
Frank Lawton
Role: John Watherstone
Neil North
Role: Ronnie Winslow
Nicholas Hannen
Role: Col. Watherstone
Mona Washbourne
Role: Miss Barnes
Stanley Holloway
Role: Comico
Wilfrid Hyde-White
Role: Wilkinson
Evelyn Roberts
Role: Hamilton MP
W.A. Kelley
Role: Brian O'Rourke
Edward Lexy
Role: First Elderly Member
Vera Cook
Role: Violet's friend
Hugh Dempster
Role: Agricultural Member
Gordon McLeod
Role: 2nd. Elderly Member - Smoking Room
Ivan Samson
Role: Captain Flower
Kynaston Reeves
Role: Lord Chief Justice
Charles Groves
Role: Clerk of the Court
Ernest Thesiger
Role: Mr. Ridgeley Pierce
Cyril Ritchard
Role: Himself
Lewis Casson
Role: Adm. Springfield (uncredited)
Colin Gordon
Role: Reporter Interviewing Dickie (uncredited)
Mary Hinton
Role: Mrs. Elliott (uncredited)
David Horne
Role: Bank Manager (uncredited)
Noel Howlett
Role: Mr. Williams (uncredited)
Aubrey Mallalieu
Role: Mr. Roberts (uncredited)
Dandy Nichols
Role: Miss Hawkins (uncredited)
Philip Ray
Role: First Speaking Member (uncredited)
Bill Shine
Role: Fred (uncredited)
Frank Tickle
Role: Mr. Gunn (uncredited)
Margaret Withers
Role: Mrs. Jordan (uncredited)