Edward Cedric Hardwicke , was an English actor, known for his portrayal of Dr. Watson in the Granada TV series Sherlock Holmes.
Hardwicke was born in London, England, the son of actors Sir Cedric Hardwicke and Helena Pickard. He began his film career in Hollywood at the age of 10, in Victor Flemings film A Guy Named Joe, with Spencer Tracy. He returned to England, attended Stowe School, and fulfilled his national service as a Pilot Officer in the Royal Air Force. He attended Royal Academy of Dramatic Art and trained as an actor.
Source: Wikipedia