A British resident, who spent seven years in US captivity and was allegedly tortured, has become the first prisoner to be released from Guantanamo Bay by the Obama administration.

Binyam Mohamed (30) returned to Britain and resumed life as a free man after what he described as an ordeal he had never dreamed of in his "darkest nightmares", one in which he was "abducted, hauled from one country to the next and tortured in medieval ways -- all orchestrated by the US government."