Sarah Miles
Lady Caroline Lamb
Jon Finch
William Lamb
Richard Chamberlain
George Gordon, Lord Byron
John Mills
Canning
Margaret Leighton
Lady Melbourne
Pamela Brown
Lady Bessborough
Silvia Monti
Miss Milbanke
Ralph Richardson
George IV
Laurence Olivier
Duke of Wellington
Caterina Boratto
Peter Bull
Minister
Michael Wilding
Lord Holland
Charles Carson
Potter
Sonia Dresdel
Lady Pont
Robert Harris
Apothecary
Richard Hurndall
Radical
Paddy Joyce
Irish housekeeper
Bernard Kay
Benson
Mario Maranzana
Coachman
Norman Mitchell
Restaurant functionary
Trevor Peacock
Agent
Ralph Truman
Admiral