Dudley Moore
Doctor Watson / Mr. Spiggot / Mrs. Ada Holmes / Piano Player
Peter Cook
Sherlock Holmes
Denholm Elliott
Stapleton
Joan Greenwood
Beryl Stapleton
Hugh Griffith
Frankland
Irene Handl
Mrs. Barrymore
Terry-Thomas
Dr. Mortimer
Max Wall
Arthur Barrymore
Kenneth Williams
Sir Henry Baskerville
Roy Kinnear
Selden the Axe Murderer