President Barack Obama has delivered a “slap in the face” to Britain over the American failure to release the last UK resident in Guantanamo Bay, four MPs have protested.

The Conservatives Andrew Mitchell and David Davis and Labour’s Jeremy Corbyn and Andy Slaughter set aside their political differences to launch a scathing attack on the White House over the fate of Shaker Aamer.

He has been in the controversial US detention centre since he was picked up in Afghanistan 13 years ago, but has never been charged or tried. Mr Aamer, whose family lives in London, has never seen the youngest of his four children.

Mr Cameron has repeatedly urged the President to intervene, making his most recent appeal when the leaders met at the G7 summit in Germany.

Labour MP, Jeremy Corbyn is one of four MPs to launch a scathing attack on the White House over the fate of Shaker Aamer (Rex)

The four MPs visited Washington last month to press the case for Mr Aamer’s release. Writing in the New York Times, they said they felt “shortchanged” by the response they received from Obama administration officials and senators alike.

They wrote: “It is difficult for us to shake off the depressing notion that the Obama administration is indifferent to the repeated requests of the British government. It is a slap in the face for America’s staunchest friend.

“These things matter in the war against terrorism. All four of us are senior members of Parliament who represent minority and Muslim communities in our constituencies.

“The scourge of terrorism will never be defeated unless we can win the hearts and minds of those who might be receptive to the terrorists’ message. And respect for justice and for the rule of law is essential in that battle.”

CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings Show all 12 1 /12 CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings September 2001 Following the 9/11 hijackings by Al-Qaida, US President George Bush signs a Memorandum of Notification that authorises the CIA to capture, detain, and interrogate figures associated with terrorist organisations. CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings October 2001 The Office of Legal Counsel authorises the use of military force to combat terrorist activities within the United States. CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings January 2002 Military guards take first 20 detainees to the Guantanamo Bay detention camp, located in south-eastern Cuba. The prisoners are classed as “enemy combatants” and therefore not subject to the same legal rights as prisoners held under the Geneva Convention. CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings 2002 and 2003 Al-Qaida suspects Khalid Sheikh Mohammed, Abu Zubayda and Abd al-Rahim al-Nashiri are all waterboarded. EPA CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings June 2004 The Supreme Court makes a ruling that reverses a decision saying that Guantanamo Bay lies outside the jurisdiction of the US courts. Detainees now have the right to legally challenge their imprisonment. CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings May 2005 Amnesty International brands Guantanamo Bay the “gulag of our times” in its international report. CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings December 2005 The Detainee Treatment Act of 2005 is passed. CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings February 2006 The United Nations calls unsuccessfully for Guantanamo Bay to be closed. It claims some aspects of the detainees’ treatment amount to torture. CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings December 2007 The CIA admits that it destroyed videotapes made in 2002 that evidenced treatment of Guantanamo Bay detainees. Getty Images CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings January 2009 Newly-elected US president Barack Obama pledges to close Guantanamo Bay within 12 months. He later renegades on the bid. GETTY IMAGES CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings December 2013 The Report of the Detainee Inquiry is published. Chairman Sir Peter Gibson concludes that British intelligence officers were aware of detainees’ mistreatment. CIA 'torture' report: Timeline from 9/11 to Dianne Feinstein's findings December 2014 The Justice Department asks the US appeals court to overturn a decision to allow the release 32 videos that depict Guantanamo guards forcibly removing a Syrian detainee from his cell and subjecting him to forced feedings. The Senate Select Committee on Intelligence, chaired by Dianne Feinstein, releases its report.

They described as “deeply insulting” the Pentagon’s suggestion that British security services might not be able to keep an eye on Mr Aamer.

“We are, after all, America’s most trusted ally, and have stood shoulder to shoulder with the United States, expending our blood and treasure, in two controversial wars in Iraq and Afghanistan,” they said.