Thomas Stewart \"Tom\" Baker is an English actor. He is best known as the fourth incarnation of the Doctor in the science fiction series Doctor Who from 1974 to 1981, a longer tenure than any other actor, and for the narration of the comedy series Little Britain. Baker's voice has been described as \"sonorous\" and was once voted the fourth most recognisable in the UK. In addition to performing character roles, Baker has used his distinctive voice to narrate many commercials, video games and television series.
At the age of 15 Baker became a novice monk with the De la Mennais Brothers in Jersey and later in Shropshire. However, he gradually lost his vocation and when 21 he left monastic life and undertook National Service in the Royal Army Medical Corps. On leaving the army, he joined the Merchant Navy and then became an actor joining the Royal National Theatre Company under Laurence Olivier.
Baker's first major film role was as Rasputin in Nicholas and Alexandra, and he played the villain in The Golden Voyage of Sinbad in 1973. In 1974, Baker assumed the role of the Doctor in the BBC science fiction series, Doctor Who, becoming an iconic figure and the longest to hold the role.