The UK tolerated “inexcusable” treatment of US detainees after the 9/11 attacks, MPs have found.
The Intelligence and Security Committee (ISC) said it was “beyond doubt” the UK knew the US mistreated detainees.
The UK continued to supply intelligence to allies in 232 cases where British officials knew or suspected mistreatment, its report said.
The ISC found no “smoking gun” indicating a policy of deliberately overlooking mistreatment.
Committee chairman Dominic Grieve said: “In our view the UK tolerated actions, and took others, that we regard as inexcusable.”
The ISC rejected claims by intelligence agencies that the cases detailed were no more than “isolated incidents”.
“It is difficult to comprehend how those at the top of the office did not recognise the pattern of mistreatment by the US,” the report said.