- John Gielgud
- Benjamin Disraeli
- Diana Wynyard
- Mary Anne Disraeli
- Will Fyffe
- The Agitator
- Owen Nares
- Lord Derby
- Fay Compton
- Queen Victoria
- Pamela Standish
- Princess Victoria
- Stephen Murray
- Mr. W.E. Gladstone
- Frederick Leister
- Lord Melbourne
- Nicholas Hannen
- Sir Robert Peel
- Anthony Ireland
- Count D'Orsay
- Irene Browne
- Lady Londonderry
- Joss Ambler
- Earl of Carnarvon
- Hugh Bicket
- (uncredited)
- Vera Bogetti
- Lady Blessington
- Barbara Everest
- Baroness Lehzen
- Lyn Harding
- Bismarck
- Glynis Johns
- Miss Sheridan
- Margaret Johnston
- Miss Sheridan
- Nadine March
- Mary Anne's maid
- Gordon McLeod
- John Brown
- John Patience
- (uncredited)
- Leslie Perrins
- Earl of Salisbury
- Kynaston Reeves
- Lord Stanley
- Abraham Sofaer
- Turkish ambassador
- Andrea Troubridge
- Miss Sheridan
- Grant Tyler
- Boy
- J. Walters
- (uncredited)
