Carol Marsh

Susan Graham

David Tomlinson

Nick Martin

Mervyn Johns

Ernest Bennett

Richard Hearne

Professor Pastry

Terry-Thomas

Self

Jimmy Edwards

Dr. Edwards

Peter Hammond

Spencer Stone

Jon Pertwee

Headwaiter

Wilfrid Hyde-White

Dr. B. Jekyll

Peter Haddon

Major Basil Beagle

Geoffrey Sumner

Humphrey Beagle

Zena Marshall

Giselle

Colin Gordon

Chadbeater Longwick

Judith Furse

Mrs. Martin

Edmund Willard

Ezekial

Robert Lamouret

The 'Duck' Man

Henry Kendall

Lord Bruce Carlton

Bill Fraser

Oliver Cromwell

Shirl Conway

Cabaret Star

George Benson

Temporary Waiter

Sandra Dorne

Receptionist

Patricia Raine

Amber

Ronald Adam

Director General of the BBC (uncredited)

Michael Balfour

Barman (uncredited)

Johnny Briggs

BBC Page Boy (uncredited)

Esma Cannon

Autograph Huntress (uncredited)

Cyril Chamberlain

(uncredited)

Andrew Crawford

First BBC Announcer (uncredited)

Valentine Dyall

Man Telling Story at BBC (uncredited)

Danny Green

Liftman (uncredited)

Kenneth Griffith

Nick Martin's BBC Colleague (uncredited)

Anne Gunning

Young Woman (uncredited)

James Hayter

Inn Landlord (uncredited)

Glynis Johns

Miranda Trewella (uncredited)

Michael Medwin

Man Giving BBC Boxing Talk (uncredited)

Hal Osmond

Radio Sound-Effects Man (uncredited)

Brian Oulton

BBC Producer (uncredited)

Wally Patch

BBC Commissionaire (uncredited)

Dennis Price

Lord Byron (archive footage) (uncredited)

Basil Radford

Maj. Bright (uncredited)

Harry Secombe

Alf (uncredited)

Anthony Steel

(uncredited)

David Ward

Ghost (uncredited)

Michael Ward

News Reader (uncredited)

Richard Wattis

Compere of Nick Nack Show (uncredited)

Naunton Wayne

Capt. Early (uncredited)