| William Pitt as a boy | Geoffrey Atkins | |
| William Pitt / The Earl of Chatham | 罗伯特·多纳特
 | |
| Mrs. Sparry | Jean Cadell | |
| Charles James Fox | 罗伯特·莫利
 | |
| Eleanor Eden | 菲利丝·卡沃特
 | |
| George the Third | Raymond Lovell | |
| Queen Charlotte (as Agnes Laughlin) | Agnes Lauchlan | |
| William Wilberforce | 约翰·米尔斯
 | |
| Lord North | 费利克斯·艾尔默
 | |
| Dundas | Ian McLean | |
| Sheridan | Max Adrian | |
| Sir Evan Nepean | A. Bromley Davenport | |
| Smith | John Salew | |
| Napoleon | 赫伯特·罗姆
 | |
| Tallerand | Albert Lieven | |
| Lord Nelson | Stephen Haggard | |
| Earl Spencer | Stuart Lindsell | |
| Addington | Henry Hewitt | |
| Sir Wm. Farquhar | Frederick Culley | |
| Coachman | Frank Pettingell | |
| Gentleman Jackson | Leslie Bradley | |
| Dan Mendoza | Roy Emerton | |
| Mr. Melvill | 休·迈克德莫特
 | |
| Lord Grenville | Alfred Sangster | |
| Bit Part (uncredited) | Neal Arden | |
| Millicent Grey (uncredited) | 凯思琳·拜荣
 | |
| Bit Part (uncredited) | Esma Cannon | |
| Bit Part (uncredited) | Leslie Dwyer | |
| Bit Part (uncredited) | Philip Friend | |
| Admiral (uncredited) | Peter Gawthorne | |
| Bit Part (uncredited) | Muriel George | |
| Bit Part (uncredited) | Leo Glenn | |
| Bit Part (uncredited) | Alfred Goddard | |
