In this letter addressed to the Secretary of State for Foreign and Commonwealth Affairs, REDRESS and nine other human rights groups respond to the UK government’s announcement on 19 December 2013 that the parliamentary Intelligence and Security Committee (ISC) has been tasked with examining allegations of UK complicity in torture and other ill-treatment of detainees held overseas; allegations that previously had been the subject of the Detainee Inquiry, chaired by Sir Peter Gibson. The organisations reiterate their position that an inquiry compliant with international human rights standards is what is required to get to the truth about these allegations and fulfill the UK’s obligations under international law.