Robert Donat
William Pitt / The Earl of Chatham
Robert Morley
Charles James Fox
Phyllis Calvert
Eleanor Eden
John Mills
William Wilberforce
Geoffrey Atkins
William Pitt, as a boy
Jean Cadell
Mrs. Sparry
Raymond Lovell
George the Third
Agnes Lauchlan
Queen Charlotte
Felix Aylmer
Lord North
Ian McLean
Dundas
Max Adrian
Richard Sheridan
A. Bromley Davenport
Sir Evan Nepean
John Salew
Smith
Herbert Lom
Napoleon
Albert Lieven
Talleyrand
Stephen Haggard
Lord Nelson
Stuart Lindsell
Earl Spencer
Henry Hewitt
Addington
Frederick Culley
Sir Wm. Farquhar
Frank Pettingell
Coachman
Leslie Bradley
Gentleman Jackson
Roy Emerton
Dan Mendoza
Hugh McDermott
Mr. Melvill
Alfred Sangster
Lord Grenville
Kathleen Byron
Millicent Grey (uncredited)
Leo Genn
Danton (uncredited)