Thomas Stewart "Tom" Baker (born 20 January 1934) is an English actor. He is known for his portrayal of 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, which has been described as "sonorous", was voted the fourth-most recognisable in the UK.