Tom Baker (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 . In addition to performing acting roles , Baker has narrated commercials , video games , audiobooks and television series .
Tom Baker is incapable of getting involved with narrating audio books.