Keira Knightley
Georgiana Cavendish, Duchess of Devonshire
Ralph Fiennes
Duke of Devonshire
Charlotte Rampling
Lady Spencer
Dominic Cooper
Charles Grey
Simon McBurney
Charles Fox
Aidan McArdle
Richard Brinsley Sheridan
John Shrapnel
General Grey
Patrick Godfrey
Dr. Neville
Michael Medwin
Speechmaker
Richard McCabe
Sir James Hare
Calvin A. Dean
Devonshire House Servant (as Calvin Dean)
Hannah Stokely
Devonshire House Maid
Bruce Mackinnon
Sir Peter Teazle
Eva Hrela
Charlotte (Age 3)
Poppy Wigglesworth
Charlotte (Age 9)
Mercy Fiennes Tiffin
Little G
Sebastian Applewhite
Augustus
Kate Burdette
Lady Harriet
Laura Stevely
Lady Elizabeth
Benjamin Noble
Lord Ambrose (as Ben Garlick)
Camilla Arfwedson
Lady Charlotte
Fiona Sheehan
Young Girl in Theatre
Gilbert Wynne
Althorpe Servant
Richard Curzon
Heaton's Clerk
Sophia Johnston
Guest at Lady Melbourne's Ball
Katerina Tana
Guest at Lady Melbourne's Ball
Clive Pearse
Narrator (voice)
