Robert Donat

William Pitt / The Earl of Chatham

Robert Morley

Charles James Fox

Phyllis Calvert

Eleanor Eden

John Mills

William Wilberforce

Jean Cadell

Mrs. Sparry

Raymond Lovell

George the Third

Felix Aylmer

Lord North

Ian McLean

Dundas

Max Adrian

Richard Sheridan

John Salew

Smith

Herbert Lom

Napoleon

Albert Lieven

Talleyrand

Henry Hewitt

Addington

Frederick Culley

Sir Wm. Farquhar

Frank Pettingell

Coachman

Leslie Bradley

Gentleman Jackson

Roy Emerton

Dan Mendoza

Hugh McDermott

Mr. Melvill

Kathleen Byron

Millicent Grey (uncredited)

Leo Genn

Danton (uncredited)

Esma Cannon

Servant at Lord Auckland's

Leslie Dwyer

Servant at Lord Auckland's

Philip Friend

Peter Gawthorne

Admiral

Muriel George

Mrs. Carr

Alf Goddard

Morland Graham

James Harcourt

Bellamy

David Horne

Mayor

Gordon James

James Kenney

Frederick Leister

Lord Auckland

Aubrey Mallalieu

Somerset

Gibb McLaughlin

George Selwyn

Charles Paton

Esme Percy

Kynaston Reeves

J.H. Roberts

Johnnie Schofield

Ronald Shiner

Man in Stocks

John Slater

Ann Stephens

Merle Tottenham

Maid at Lord Auckland's

Austin Trevor

French Registrar

Frederick Valk

Margaret Vyner

Duchess of Devonshire

Jack Watling

Atkinson

Edmund Willard

Bruce Winston