Dennis Price

as Lord Byron

Mai Zetterling

as Teresa Guiccioli

Joan Greenwood

as Lady Caroline Lamb

Linden Travers

as Augusta Leigh

Sonia Holm

as Annabella Milbanke

Raymond Lovell

as John Hobhouse

Leslie Dwyer

as Fletcher

Denis O'Dea

as Prosecuting Counsel

Irene Browne

as Lady Melbourne

Virgílio Teixeira

as Pietro Gamba

Ernest Thesiger

as Count Guiccioli

Gerard Heinz

as Austrian Officer

Cyril Chamberlain

as Defending Counsel

Wilfrid Hyde-White

as Mr. Hopton

Henry Oscar

as Count Gamba

Richard Molinas

as Gondolier

Robert Harris

as Dallas

Ronald Adam

as Judge

Archie Duncan

as John Murray

Barry Jones

as Colonel Stonhope

Natalie Moya

as Lady Milbanke

John Stone

as Lord Clark

Nora Swinburne

as Lady Jersey

John Salew

as Samuel Rogers

Lena Lanare

as La Fornarina

Betty Lynne

as Signora Segati

Bernard Rebel

as Doctor Bruno

Liam Gaffney

as Tom Moore

Gilbert Davis

as Tita

Vincent Holman

as Bailiff

Guy Le Feuvre

as Doctor

Aubrey Mallalieu

as 1st Old club member

Desmond Roberts

as 2nd Old club member

Zena Marshall

as An Italian Woman