Peter Davison born Peter Malcolm Gordon Moffett 13 April 1951 is an English actor with many credits in television dramas and sitcoms He became famous as Tristan Farnon in the BBCs television adaptation of James Herriots All Creatures Great and Small stories His subsequent starring roles included the sitcoms Holding the Fort and Sink or Swim the fifth incarnation of the Doctor in Doctor Who Dr Stephen Daker in A Very Peculiar Practice and Albert Campion in Campion He also played David Braithwaite in At Home with the Braithwaites Dangerous Davies in The Last Detective and Henry Sharpe in Law Order UK Description above from the Wikipedia article Peter Davison licensed under CCBYSA full list of contributors on Wikipedia