Shaker Aamer with two of his children . He has been incarcerated in Guantanamo Bay for 13 years without charge or trial . MPs will make a blistering attack today on the US for failing to hand over Guantanamo Bay inmate Shaker Aamer to Britain . Politicians from all main parties will raise the scandal of the 48-year-old continuing to languish in the prison camp . Mr Aamer , a father of four , has been incarcerated in the naval facility in Cuba for 13 years without charge or trial . His supporters in Parliament will use a backbench debate to renew pressure on the White House to keep the promise to free the terror suspect , who lived in South London with his wife and children . MPs will also question whether the US authorities secretly negotiated to send him to Saudi Arabia to face possible torture – despite repeatedly telling the Government he would be sent back to Britain . Meanwhile , Amnesty International will hand a 32,000-signature petition to Downing Street calling for him to be freed . Saudi-born Mr Aamer is the longest-serving UK resident in Guantanamo and has twice been cleared for release , by the Bush administration in 2007 and by Barack Obama in 2009 . But redacted documents released under Freedom of Information requests show US officials continued to hold top-level meetings with Saudi ministers which indicate they were discussing sending him to the Arab kingdom instead . One file reveals that less than two months after US Secretary of State Hillary Clinton told then Foreign Secretary William Hague in August 2010 that she ‘ welcomed ... discussing Mr Aamer ’ s case ’ , the US sent an ‘ action request ’ to its embassy in Riyadh on the subject of ‘ engaging Saudi Arabia on Shaker Aamer ’ . Another document reveals a meeting in Jeddah in August 2013 between high-ranking US officials and the Saudi interior minister in which Mr Aamer was described as a ‘ Saudi citizen with significant ties to the UK ’ . The current impasse is embarrassing for David Cameron , who said Mr Obama had vowed to ‘ prioritise ’ the detainee ’ s release after White House talks in January . Saudi-born Mr Aamer is the longest-serving UK resident in Guantanamo and has twice been cleared for release , by the Bush administration in 2007 and by Barack Obama in 2009 . David Davis , the Tory ex-minister who will speak in today ’ s debate , said : ‘ The intention is to put more pressure on America to keep the promise it made to Britain . The senior half of the US administration is saying there is no evidence against Shaker and that he must be released , yet the other half is putting obstacles in the way. ’ Cori Crider , a director of legal charity Reprieve and Mr Aamer ’ s lawyer , said : ‘ It is a scandal that he continues to languish in Guantanamo . ‘ Bland reassurances that the Obama administration is prioritising his case are no longer enough . We need a concrete timetable for his return home , and we must see answers on why this didn ’ t happen years ago . 'For a start , we need to know what happened in secret meetings between the UK and US , and the US and Saudi Arabia – are these indications of an attempt to silence him by handing him over to the Saudi regime ? ’ A U.S. Military police officer provides water to chained detainees as they arrive at Camp X-Ray in 2002 . Saudi-born Mr Aamer moved to London almost 20 years ago and married , securing leave to remain in Britain . In 2001 he was detained in Kabul while carrying out peaceful voluntary work for an Islamic charity , his representatives claim . He was handed to the US military for $ 5,000 and tortured at a secret ‘ black site ’ prison . US intelligence insisted he financed Al Qaeda and was a key aide of Osama Bin Laden , a claim he vehemently denied . He was sent to Guantanamo Bay in February 2002 . Despite being cleared for release , US officials are determined he will be sent to Saudi Arabia , even though there are serious concerns he will face torture . Mr Aamer ’ s lawyers allege the intention is to silence their client , who claims to have witnessed abuse in the presence of a British security official .
Shaker Aamer has been in Guantanamo Bay Bay for 13 years without charge . Today MPs will attack the US for failing to hand over British inmate . Politicians from all main parties will raise the plight of the father-of-four . Will also question whether US negotiated to send him to Saudi Arabia . This is despite repeatedly telling UK government he would come to Britain . Saudi-born Mr Aamer is the longest-serving UK resident in Guantanamo Bay .