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