File photograph shows former News of the World newspaper editor and Prime Minister David Cameron's director...
Former News of the World newspaper editor and Prime Minister David Cameron's director of communications, Andy Coulson, is seen leaving his home in Dulwich, southeast London in this September 8, 2010 file photograph. Coulson resigned as Cameron's director of Communications, Downing Street said, on January 21, 2011. REUTERS/Luke MacGregor/Files (BRITAIN - Tags: POLITICS SOCIETY)