David Hemmings

Benjamin Oakes / Walter Leybourne

Joanna Pettet

Josephine Pacefoot

George Sanders

Sir Francis Leybourne

Dany Robin

Babette

Warren Mitchell

Count Pandolfo

John Bird

Home Secretary

William Rushton

Sylvester Wall

Bill Fraser

Inspector MacPherson

Avril Angers

Flora's Mother

Maurice Denham

Editor, The Times

Martita Hunt

Headmistress

Betty Marsden

Felicity

Hugh Burden

Lord Tennyson

Arnold Diamond

Charles Dickens

Tessie O'Shea

Music Hall Singer

Clement Freud

Mr. Mason

Carol Friday

Flora

Jan Holden

Lady Dilke

John Cleese

Jones (uncredited)

Veronica Carlson

Lilly (uncredited)

Peter Jeffrey

Sherlock Holmes (uncredited)

Thorley Walters

Doctor Watson (uncredited)

Penny Spencer

Evelyn (uncredited)

Queenie Watts

Old Crone (uncredited)

Margaret Nolan

Busty Prostitute (uncredited)

Milton Reid

Henchman (uncredited)

Ferdy Mayne

First Petitioner (uncredited)

Eric Barker

(uncredited)

Joe Lynch

Policeman (uncredited)

William Mervyn

Cabinet Minister (uncredited)

Charles Lloyd Pack

Second Petitioner (uncredited)

Jessie Robins

Machinist (uncredited)

Marianne Stone

Machinist (uncredited)