The UK's last Guantanamo Bay detainee, who returned home in October after 14 years in captivity, has told extremists to "get the hell out" of the country.
Shaker Aamer told the Mail on Sunday that he denounced attacks such as the murder of Fusilier Lee Rigby, saying "you cannot just kill anybody".
Mr Aamer said reuniting with his wife in London had "washed away the pain".
But he told the BBC he feared his four children, including a son he had never met before, saw him as a stranger.
The 48-year-old was held at the US military base in Cuba over allegations he had led a Taliban unit in Afghanistan and met al-Qaeda leader Osama Bin Laden, but he was never charged.
'Banging the wall'
In his first broadcast interview since being released, Mr Aamer revealed details of the abuse he alleges was inflicted on him by American interrogators.
He also claimed a British intelligence officer witnessed him being beaten at a US air base in Afghanistan, where he was first held, but did nothing to stop the abuse.
Speaking to the Victoria Derbyshire programme, he said his interrogators at Bagram air base repeatedly banged his head against the wall.
"I felt my head - boom, boom, boom - banging the wall. And all I remember [is] that my head just kept banging the wall, back and forth, back and forth."
Asked if he was certain a British intelligence officer was present, he replied: "I would say 80, 90%. I have no doubt he is an Englishman, because of the way he spoke, the way he is very careful, the way he was sitting far away, looking at me."
He said the day before the incident he had "met John, who already told me 'I'm with the MI5 intelligence service and I came to ask you a few questions'. So, I have no doubt he was an Englishman." ( BBC )
