Alastair Sim as Deniston Russell

Fay Compton as Agnes Russell

Beatrice Campbell as Lucille Grayson

Guy Middleton as Simon Russell

George Cole as Herbert Russell

A.E. Matthews as Sir Charles Robson

Joyce Grenfell as Elizabeth Robson

Anthony Steel as Roger Godfrey

John Laurie as Gordon Webb

Eleanor Summerfield as Sheila Wilcott

Ronald Adam as Bank Manager

Leslie Dwyer as Police Sergeant

Ernest Thesiger as Endicott

Charlotte Mitchell as Ethel

Mackenzie Ward as Benson

Veronica Hurst as Joan Webb

Audrey Hepburn as Cigarette Girl

Hugh Griffith as Henry Russell

Colin Gordon as Station Constable

Michael Pertwee as Stewart

Mary Germaine as Susan Heath

Noel Howlett as Clerk of the Court

Martin Boddey as Store Shopwalker

Jack Arrow as Policeman in Court (uncredited)

Paul Beradi as Club Patron (uncredited)

John Boxer as Constable Charles Baker (uncredited)

Eddie Boyce as Policeman in Court (uncredited)

Sebastian Cabot as Card Player (uncredited)

Ian Colin as Bank Robber (uncredited)

Ivan Craig as Card Player (uncredited)

George Crawford as Bailiff (uncredited)

Dan Darnelli as Pedestrian (uncredited)

Grace Denbeigh-Russell as Nurse (uncredited)

Lyn Evans as Jailer (uncredited)

Ian Fleming as Doctor (uncredited)

Robert Gregory as Shopper at Swan & Edgar (uncredited)

Pat Hagan as Police Sergeant in Court (uncredited)

Victor Harrington as Shopper in Swan & Edgar (uncredited)

Scott Harrold as 2nd Clerk of the Court (uncredited)

Frank Hawkins as Store Detective (uncredited)

Laurence Hepworth as Shopper (uncredited)

Arthur Howard as Businessman on Train (uncredited)

Frederick Kelsey as Henry’s Butler (uncredited)

Avice Landone as Shopper at Swan & Edgar (uncredited)

Ned Lynch as Pedestrian (uncredited)

Louis Matto as Club Barman (uncredited)

Jim Morris as Policeman in Court (uncredited)

Douglas Muir as Card Player (uncredited)

William Murray as Jeweller’s Assistant (uncredited)

Charles Saynor as Policeman in Court (uncredited)

Jack Sharp as Taxi Driver (uncredited)

John Sharp as Constable Cafferty (uncredited)

Christine Silver as Mrs. Goodwin (uncredited)

Emile Stemmler as Club Maitre d’ (uncredited)

Toke Townley as Pickpocket (uncredited)

John Warren as Card Player (uncredited)