Hildegard Knef

Trilby O'Farrell

Donald Wolfit

Svengali

Terence Morgan

Billy Bagot

Derek Bond

Landlord

Alfie Bass

Carrell

Noel Purcell

Patrick O'Farrell

Jeremy Brett

Pierre

Paul Rogers

Taffy

David Kossoff

Gecko

Hubert Gregg

Durian

Harry Secombe

Barizel

Peter Illing

Police Inspector

Joan Haythorne

Mrs. Bagot

Hugh Cross

Dubose

David Oxley

Dodor

Richard Pearson

Lambert

Toots Pounds

Mama Martin

Michael Craig

Zou Zou

Neville Phillips

Contran

Martin Boddey

Doctor

Rica Fox

Dresser

Joan Heal

Barmaid

Arnold Bell

Tout

Cyril Smith

Stage Manager

Marne Maitland

Stage Manager

Michael Hordern

Billy's Uncle

Elisabeth Schwarzkopf

Trilby O'Ferrall (singing voice)