The UK failed to track detainees handed over to the US, neglecting to protect them from possible torture in America's secret prisons. That's been revealed after an agreement between the two states on the treatment of terror-suspects captured in Iraq was declassified. 28-year-old Pakistani Yunus Rahmatullah is one of the victims of this deal. He was seized by British soldiers in Iraq in 2004 as a suspected insurgent and secretly sent to a US detention camp in Afghanistan, a process dubbed extraordinary rendition. The man's lawyers are calling on the UK to help free him as Britain was the detaining authority.