Eric Portman
— Sir John Dearing KC
Anne Crawford
— Lady Helen Brasted
Hugh Williams
— Lord Arthur Brasted
Michael Denison
— Derek Waterhouse
Nora Swinburne
— Lady Dearing
Raymond Lovell
— Frank Mainwaring KC
Claire Bloom
— Mary Dearing
Frank Cellier
— The Judge
Clive Morton
— Mersel
Maurice Denham
— Johnson
Thora Hird
— Derek's Charwoman
Elspet Gray
— Daphne Dearing
Cecil Bevan
— Morton
John Stone
— Sir John's Junior
Philip Saville
— Mainwaring's Junior
Martin Benson
— Count Stephan Mikla
Cyril Chamberlain
— Policeman in Park
Rosemary Treston
— Helen
Martin Miller
— Mario - Waiter at the Savoy
Marcel Poncin
— Bertoni
Carl Jaffe
— Johan Meyer
Geoffrey Denton
— Foreman of the Jury
Noel Howlett
— Court Usher
Carroll Gibbons
— Himself - Orchestra Leader (as Carroll Gibbons and His Orchestra)