Peter Jackson; Philip Pullman on William Blake; Memoirs of the Year

Director Peter Jackson and co-writer Philippa Boyens talk to John Wilson about their final instalment of The Hobbit film franchise; the author Philip Pullman reflects on one of his heroes, William Blake, as a new exhibition at the Ashmolean in Oxford explores his formation as an engraver; and historian Kathryn Hughes makes her selection of biographies and memoirs of the year.