Carol Marsh (23)

Susan Graham

David Tomlinson (32)

Nick Martin

Mervyn Johns (50)

Ernest Bennett

Richard Hearne (40)

Professor Pastry

Terry-Thomas (38)

Self

Jimmy Edwards (29)

Dr. Edwards

Peter Hammond (25)

Spencer Stone

Jon Pertwee (30)

Headwaiter

Wilfrid Hyde-White (46)

Dr. B. Jekyll

Peter Haddon (51)

Major Basil Beagle

Geoffrey Sumner (40)

Humphrey Beagle

Zena Marshall (23)

Giselle

Colin Gordon (38)

Chadbeater Longwick

Judith Furse (37)

Mrs. Martin

Edmund Willard (64)

Ezekial

Robert Lamouret (34)

The 'Duck' Man

Henry Kendall (52)

Lord Bruce Carlton

Bill Fraser (41)

Oliver Cromwell

Shirl Conway (33)

Cabaret Star

George Benson (38)

Temporary Waiter

Sandra Dorne (25)

Receptionist

Patricia Raine (20)

Amber

Ronald Adam (52)

Director General of the BBC (uncredited)

Michael Balfour (31)

Barman (uncredited)

Johnny Briggs (13)

BBC Page Boy (uncredited)

Esma Cannon (43)

Autograph Huntress (uncredited)

Cyril Chamberlain (40)

(uncredited)

Andrew Crawford (31)

First BBC Announcer (uncredited)

Valentine Dyall (41)

Man Telling Story at BBC (uncredited)

Danny Green (46)

Liftman (uncredited)