Former Guantanamo detainee Binyam Mohammed is driven out of RAF Northolt west of London February 23, 2009. Mohammed, a British resident held at Guantanamo Bay for more than four years returned to Britain a free man on Monday and accused the U.S. government of inflicting "medieval" torture on him -- with British collusion. REUTERS/Eddie Keogh (BRITAIN) 

Former Guantanamo detainee Binyam Mohammed is driven out of RAF Northolt west of London February 23, 2009. Mohammed, a British resident held at Guantanamo Bay for more than four years returned to Britain a free man on Monday and accused the U.S. government of inflicting "medieval" torture on him -- with British collusion. REUTERS/Toby Melville (BRITAIN) 

Former Guantanamo detainee Binyam Mohammed is driven out of RAF Northolt west of London February 23, 2009. Mohammed, a British resident held at Guantanamo Bay for more than four years returned to Britain a free man on Monday and accused the U.S. government of inflicting "medieval" torture on him -- with British collusion. REUTERS/Eddie Keogh (BRITAIN) 

Former Guantanamo detainee Binyam Mohammed (L) is driven out of RAF Northolt west of London February 23, 2009. Mohammed, a British resident held at Guantanamo Bay for more than four years returned to Britain a free man on Monday and accused the U.S. government of inflicting "medieval" torture on him -- with British collusion. REUTERS/Toby Melville (BRITAIN) 

Former Guantanamo detainee Binyam Mohammed (L) is driven out of RAF Northolt west of London February 23, 2009. Mohammed, a British resident held at Guantanamo Bay for more than four years returned to Britain a free man on Monday and accused the U.S. government of inflicting "medieval" torture on him -- with British collusion. REUTERS/Eddie Keogh (BRITAIN) 

Former Guantanamo detainee Binyam Mohammed (L) is driven out of RAF Northolt west of London February 23, 2009. Mohammed, a British resident held at Guantanamo Bay for more than four years returned to Britain a free man on Monday and accused the U.S. government of inflicting "medieval" torture on him -- with British collusion. REUTERS/Eddie Keogh (BRITAIN) 

Freed Guantanamo detainee, Binyam Mohamed (C), leaves an aircraft after arriving at RAF Northolt, west of London February 23, 2009. Mohamed, a British resident held at Guantanamo Bay for more than four years returned to Britain a free man on Monday and accused the U.S. government of perpetrating "medieval" torture and abuse against him. REUTERS/ Eddie Keogh (BRITAIN) 

Freed Guantanamo detainee, Binyam Mohamed (C), leaves an aircraft after arriving at RAF Northolt, west of London February 23, 2009. Mohamed, a British resident held at Guantanamo Bay for more than four years returned to Britain a free man on Monday and accused the U.S. government of perpetrating "medieval" torture and abuse against him. REUTERS/ Eddie Keogh (BRITAIN) 

Freed Guantanamo detainee, Binyam Mohamed (4thR), leaves an aircraft after arriving at RAF Northolt, west of London February 23, 2009. Mohamed, a British resident held at Guantanamo Bay for more than four years returned to Britain a free man on Monday and accused the U.S. government of perpetrating "medieval" torture and abuse against him. REUTERS/ Eddie Keogh (BRITAIN) 

The aircraft carrying freed Guantanamo detainee Binyam Mohamed prepares to land at RAF Northolt, west of London February 23, 2009. Mohamed, a British resident held at Guantanamo Bay for more than four years returned to Britain a free man on Monday and accused the U.S. government of perpetrating "medieval" torture and abuse against him. REUTERS/ Eddie Keogh (BRITAIN) 

The U.S. military lawyer of Binyam Mohamed, Yvonne Bradley (L) listens, as Clive Stafford Smith of Reprieve speaks during a news conference in central London February 23, 2009. Mohamed, a British resident freed from prison in Guantanamo Bay in Cuba after more than four years, accused the U.S. government on Monday of orchestrating his torture. Mohamed, an Ethiopian national seized in Pakistan in 2002 before being handed over to the Americans, was put on a plane to Britain after the U.S. government agreed to release him. REUTERS/Andrew Winning (BRITAIN) 

The lawyer of Binyam Mohamed, Clive Stafford Smith, speaks during a news conference in central London February 23, 2009. Mohamed, a British resident freed from prison in Guantanamo Bay in Cuba after more than four years, accused the U.S. government on Monday of orchestrating his torture. Mohamed, an Ethiopian national seized in Pakistan in 2002 before being handed over to the Americans, was put on a plane to Britain after the U.S. government agreed to release him. REUTERS/Andrew Winning (BRITAIN) 

The U.S. military lawyer of Binyam Mohamed , Yvonne Bradley, listens during a news conference in central London February 23, 2009. Mohamed, a British resident freed from prison in Guantanamo Bay in Cuba after more than four years, accused the U.S. government on Monday of orchestrating his torture. Mohamed, an Ethiopian national seized in Pakistan in 2002 before being handed over to the Americans, was put on a plane to Britain after the U.S. government agreed to release him. REUTERS/Andrew Winning (BRITAIN) 

The U.S. military lawyer of Binyam Mohamed, Yvonne Bradley (C), sits next to Clive Stafford Smith of Reprieve (R), and Kate Allen, director of Amnesty International in the UK, at a news conference, in central London February 23, 2009. Mohamed, a British resident freed from prison in Guantanamo Bay in Cuba after more than four years, accused the U.S. government on Monday of orchestrating his torture. Mohamed, an Ethiopian national seized in Pakistan in 2002 before being handed over to the Americans, was put on a plane to Britain after the U.S. government agreed to release him. REUTERS/Andrew Winning (BRITAIN) 

Demonstrators protest outside the U.S. Embassy for the release from the U.S. Prison in Guantanamo Bay in Cuba, of British detainee Binyam Mohamed, in central London February 17, 2009. REUTERS/Toby Melville (BRITAIN)