LONDON (Agencies) - The British Government is under growing pressure to demand the return from US custody of two Pakistanis who were captured by British forces in Iraq, handed over to US forces and then sent to the infamous Dark Prison at Bagram airbase in Afghanistan, The Times reported on Monday. In February the British Government admitted that British forces captured the men in 2004 and handed them to the US. They were then taken to Bagram, where both remain without trial. However, the Government had refused to reveal their identities. The two men have now been identified by human rights workers as Amanatullah Ali, from Punjab, and Salahuddin, who was raised in the Gulf states but is a Pakistani citizen and believed to be from Balochistan. Neither man has had access to a lawyer since their capture by the SAS during a raid in Baghdad in Iraq in 2004, and Salahuddin is reported by other prisoners to have undergone a complete mental breakdown during his five-year incarceration. He is now held in the mental health wing of Bagram prison. The case of the two men, which has mired the British Government in the illegal process of transferring prisoners to prisons beyond the reach of due legal process, sometimes for harsh interrogation, known as extraordinary rendition, has become a cause cTlFbre for human rights groups. The human rights group Reprieve wrote to British Defence Secretary Bob Ainsworth at the weekend demanding that Britain exercise its right to reclaim custody of the men under the rules of a Memorandum of Understanding signed with the US Government on March 23, 2003. The memorandum gives Britain, as the detaining power in the capture of the two prisoners, the right to determine their status and to demand their return. It also makes Britain responsible for the costs of maintaining the prisoners. In February John Hutton, then Defence Secretary, delivered what he called a full account of the men to Parliament, claiming that the two were members of outlawed Lashkar-e-Taiba. Hutton said the US transferred them to Afghanistan because of a lack of linguists, continued to review their status as unlawful enemy combatants and claimed that the detainees were held in a humane environment. Reprieve challenges the truth of this statement. The Ministry of Defence claimed that the men were a significant threat to the lives of Iraqi civilians and to coalition forces. Their initial detention was appropriate, legitimate and targeted at saving lives.