John Gielgud

as Marquis of Caterhan

Cheryl Campbell

as Lady Eileen 'Bundle' Brent

Rula Lenska

as Countess Radzsky

Lynne Ross

as Nancy

James Warwick

as Jimmy Thesiger

Harry Andrews

as Superintendent Battle

Joyce Redman

as Lady Coote

Lucy Gutteridge

as Lorraine Wade

Terence Alexander

as George Lomax

Brian Wilde

as Tredwell

Sarah Crowden

as Helen

Leslie Sands

as Sir Oswald Coote

Christopher Scoular

as Bill Eversleigh

James Griffiths

as Rupert 'Pongo' Bateman

Hetty Baynes

as Vera

Robert Longden

as Gerry Wade

John Vine

as Ronny Devereux