Peter Davison has been in at least four BBC shows.
All Creatures Great and Small is a British television series based on the books of the British veterinary surgeon Alf Wight , who wrote under the pseudonym James Herriot . Doctor Who is a British science-fiction television programme produced by the BBC since 1963 . Peter Davison . He became famous as Tristan Farnon in the BBC 's television adaptation of James Herriot 's All Creatures Great and Small stories .