Obama and Cameron pressed on McKinnon at conference

Barack Obama and David Cameron have held a joint press conference following a meeting in Downing Street, in which the conflicts in Afghanistan and Libya were on the agenda.

Taking questions from journalists, the leaders were asked what steps had been taken to resolve the fate of computer hacker Gary McKinnon, who is facing extradition.

Glasgow-born Mr McKinnon, who has Asperger's syndrome, is accused of hacking into US military computer systems.