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