Veteran politician Tony Benn talks to Matthew Sweet about his final volume of diaries, A Blaze of Autumn Sunshine. Historian Eliza Filby and journalist David Aaronovitch examine how much political traditions shape contemporary politics. Writer Brian Sibley reveals the lesser-known side of Mary Poppins author PL Travers. Writer Will Self discusses Guy Debord’s prescient polemic, The Society of the Spectacle.