Black spider memos

  • Period: to

    The letters

  • Guardian journalist Rob Evans applies to see the letters

  • PM Gordon Brown blocks the disclosure of the letters

  • Freedom of Information appeal

  • Successful Upper Tribunal appeal

  • Decision vetoed by Attorney General Dominic Grieve

  • The Guardian’s legal challenge dismissed

  • Appeal court rules AG’s decision unlawful

  • Supreme Court hearing

  • Publication of the letters