Alastair Sim
— Deniston Russell
Fay Compton
— Agnes Russell
Beatrice Campbell
— Lucille Grayson
Guy Middleton
— Simon Russell
George Cole
— Herbert Russell
A.E. Matthews
— Sir Charles Robson
Joyce Grenfell
— Elizabeth Robson
Anthony Steel
— Roger Godfrey
John Laurie
— Gordon Webb
Eleanor Summerfield
— Sheila Wilcott
Ronald Adam
— Bank Manager
Leslie Dwyer
— Police Sergeant
Ernest Thesiger
— Endicott
Charlotte Mitchell
— Ethel
Mackenzie Ward
— Benson
Veronica Hurst
— Joan Webb
Audrey Hepburn
— Cigarette Girl
Hugh Griffith
— Henry Russell
Colin Gordon
— Station Constable
Michael Pertwee
— Stewart
Mary Germaine
— Susan Heath
Noel Howlett
— Clerk of the Court
Martin Boddey
— Store Shopwalker
Jack Arrow
— Policeman in Court (uncredited)
Paul Beradi
— Club Patron (uncredited)
John Boxer
— Constable Charles Baker (uncredited)
Eddie Boyce
— Policeman in Court (uncredited)
Sebastian Cabot
— Card Player (uncredited)
Ian Colin
— Bank Robber (uncredited)
Ivan Craig
— Card Player (uncredited)