| Dennis Price |
Louis D'Ascoyne Mazzini |
| Leonard Woodrow |
Warder |
| Gordon Faith |
Mr Elliott |
| John Boxer |
Prison Governor |
| Eva Stuart |
Mrs Mazzini |
| Alan Haines |
Mr Perkins |
| Jane Wenham |
Sibella |
| Gordon Gardner |
Lionel Holland |
| Nigel Graham |
Charles Ascoyne D'Ascoyne |
| Rosalind Shanks |
Priscilla |
| Timothy Harley |
Boatman |
| Edward Chapman |
Lord Ascoyne D'Ascoyne |
| Fraser Kerr |
Henry D'Ascoyne |
| Diana Olsson |
Edith D'Ascoyne |
| Wilfrid Carter |
The Rev Lord Henry D'Ascoyne |
| Margaret Wolfit |
Lady Agatha D'Ascoyne |
| David March |
Ethelred, Duke of Chalfont |
| Hector Ross |
Admiral Lord Horatio D'Ascoyne |
| Hamlyn Benson |
General Lord Rufus D'Ascoyne |
| Kenneth McClellan |
Hoskins |
| Noel Howlett |
Crown Counsel |