Dennis Price
Louis Mazzini / His Father
Alec Guinness
The D'Ascoyne Family: The Duke / The Banker / The Parson / The General / The Admiral / Young Ascoyne / Young Henry / Lady Agatha
Joan Greenwood
Sibella
Valerie Hobson
Edith D'Ascoyne
Audrey Fildes
Mama
Miles Malleson
The Hangman
Clive Morton
The Prison Governor
John Penrose
Lionel Holland
Cecil Ramage
Crown Counsel
Hugh Griffith
Lord High Steward
John Salew
Mr. Perkins
Arthur Lowe
The Reporter
Peter Gawthorne
First Lord Delivering Verdict (uncredited)
Jeremy Spenser
Young Louis (uncredited)
Carol White
Young Sibella (uncredited)
Laurence Naismith
Warder in Jail (uncredited)
Richard Wattis
Defence Counsel (uncredited)
Eric Messiter
Inspector Burgoyne
Lyn Evans
The Farmer
Barbara Leake
The Schoolmistress
Peggy Ann Clifford
Maud Redpole
Anne Valery
The Girl in the Punt
Molly Hamley-Clifford
Lady Redpole (uncredited)
Leslie Handford
Gamekeeper Hoskins (uncredited)
Cavan Malone
Young Graham (uncredited)
Gordon Phillott
Clerk of Parliament (uncredited)
Harold Young
Captain (uncredited)
