Stars (in credits order)
Robert Harris
John Wilkes
William Fox
Humphrey Cote - His Friend
Lawrence Hanray
George Kearsey - His Printer (April)
Stuart Latham
Matt Brown - His Servant
Wyndham Goldie
Lord Temple - His Patron
Martin Walker
The Duke of Grafton - Prime Minister
George Devine
Lord Halifax - Secretary of State
Aubrey Dexter
Lord Egremont, Secretary of State
A.R. Whatmore
Rev. John Horne - A Radical Parson
Margery Bryce
Mrs. Catherine Macaulay
Edgar K. Bruce
Mr. Thomas - Marshal of the King's Bench Prison
Alan Hamilton
Captain Maclean
May Whitty
Mrs. Mead - Wilkes' Mother-in-Law
Hilda Schroder
Polly - Wilkes' Daughter
Ruby Head
Cathy - a Maid
Henry Morrell
Jem Trot
Mardale Owen
Grimes
Mario Francelli
A Gaolor and a Constable
Bruce Adams
Soldiers and Constables
Violet Blythe
Comtesse de Versailles
Harvey Braban
Rev. John Horne - a Radical Parson (2nd May version)
Esmond Knight
John Wilkes (2nd May version)
Stanley Lathbury
George Kearsey - His Printer (2nd May version)
Albert Lieven
George III
Sam Payne
Irene Prador
Maria Bellini of the Neapolitan Opera
Anne Ziegler
Landlady