Shaker Aamer: My first words to my wife
14 December 2015 Last updated at 16:16 GMT
Shaker Aamer has been speaking to the BBC’s Victoria Derbyshire programme about his homecoming, after being held in Guantanamo Bay without trial for nearly 14 years.
Mr Aamer was the last British resident of the US detention facility in Cuba. The US military classified him as a threat, but he was never charged.
His lawyers say the case against him came from unreliable allegations extracted during torture, and that his treatment at the US military base raises serious questions about the legality and morality of the so-called war on terror.
A spokesperson said the UK government "stands firmly against torture and cruel, inhumane and degrading treatment or punishment".
The US Department of Defense said in a statement it "does not tolerate the abuse of detainees. All credible allegations of abuse are thoroughly investigated, and appropriate disciplinary action is taken when those allegations are substantiated."
The Victoria Derbyshire programme is broadcast on weekdays between 09:15 and 11:00 on BBC Two and the BBC News channel.