| Cast list | | Keira Knightley | as | Georgiana, The Duchess of Devonshire | | Ralph Fiennes | as | Duke of Devonshire | | Charlotte Rampling | as | Lady Spencer | | Simon McBurney | as | Fox | | Hayley Atwell | as | Bess | | Dominic Cooper | as | Grey | | Aidan McArdle | as | Richard Brinsley Sheridan | | Angus McEwan | as | Lord Robert | | Richard McCabe | as | Sir James Hare | | Mercy Fiennes Tiffin | as | Young Georgiana | | Georgia King | as | Lady Teazle | | Bruce Mackinnon | as | Sir Peter Teazle | | Andrew Armour | as | Heaton | | Poppy Wigglesworth | as | Charlotte - age 10 | | Emily Cohen | as | Harryo | | Hannah Stokely | as | Maid | | Emily Jewell | as | Nanny | | Eva Hrela | as | Charlotte - age 3 | | Sebastian Applewhite | as | Augustus | | Richard Syms | as | Dr. Neville |
| | Crew list: | | Saul Dibb (Director) | | Amanda Foreman (Writer) | | Jeffrey Hatcher (Writer) |
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