The former head of MI5 has claimed US intelligence agencies "concealed" their mistreatment of terror suspects.
Baroness Eliza Manningham-Buller said she only discovered alleged 9/11 mastermind Khalid Sheikh Mohammed was waterboarded after retiring in 2007.
In a lecture at the House of Lords, she said the US had been "very keen to conceal from us what was happening".
Her comments follow controversy over UK agents' alleged collusion with US counterparts using torture techniques...
