Mister Ten Per Cent

Charlie Drake

Percy Pointer

Derek Nimmo

Tony

Wanda Ventham

Kathy

John Le Mesurier

Jocelyn Macauley

Anthony Nicholls

Casey

Noel Dyson

Mrs. Gorman

John Hewer

Townsend

Anthony Gardner

Claude Crepe

Ronald Radd

Publicity Man

John Laurie

Scotsman

Colin Douglas

Policeman

Annette Andre

Muriel

Justine Lord

Lady Dorothea

George Baker

Lord Edward

Joyce Blair

Lady Dorothea - At First

Una Stubbs

Lady Dorothea - Later

Lyn Ashley

Maid

Nicole Shelby

Fiona

Gina Warwick

Ellen

Percy Herbert

Inspector Greet

Desmond Roberts

Manservant

Pauline Chamberlain

Woman in Theatre Audience (uncredited)

Carol Cleveland

Girl at Theatre Party (uncredited)

Sally Douglas

Glamorous Girl at Theatre Party (uncredited)

Barbara French

Girl at Theatre Party (uncredited)

Caron Gardner

Girl at Theatre Party (uncredited)

Victor Harrington

Theatre Audience (uncredited)

Juba Kennerley

Theatre Audience (uncredited)

Valerie Leon

Girl at Theatre Party (uncredited)

Harry Locke

(uncredited)

Mike Reid

Doorman (uncredited)

Philip Stewart

Theatre Audience (uncredited)

John Tatham

Theatre Audience (uncredited)

Valerie Van Ost

Girl at Theatre Party (uncredited)

Fred Wood

Audience Member (uncredited)