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
Valerie Hobson
Edith D'Ascoyne
Miles Malleson
The Hangman
Clive Morton
The Prison Governor
John Penrose
Lionel Holland
Cecil Ramage
Crown Counsel
Hugh Griffith
Lord High Steward
Eric Messiter
Inspector Burgoyne
Barbara Leake
The Schoolmistress
Peggy Ann Clifford
Maud Redpole
Anne Valery
The Girl in the Punt
Peter Gawthorne
First Lord Delivering Verdict (uncredited)
Molly Hamley-Clifford
Lady Redpole (uncredited)
Leslie Handford
Gamekeeper Hoskins (uncredited)
Cavan Malone
Young Graham (uncredited)
Jeremy Spenser
Young Louis (uncredited)
Carol White
Young Sibella (uncredited)
Laurence Naismith
Warder in Jail (uncredited)
Gordon Phillott
Clerk of Parliament (uncredited)
Richard Wattis
Defence Counsel (uncredited)
Harold Young
Captain (uncredited)
Stanley Beard
Warder (uncredited)
Norman Fisher
Member of D'Ascoyne Household (uncredited)
Maxwell Foster
Warder (uncredited)
Fletcher Lightfoot
Peer of the Realm (uncredited)
Harry Phipps
Lawyer (uncredited)
Miles Silverton
Lord (uncredited)
Ivan Staff
Valuer (uncredited)
George Wilson
Lord (uncredited)
