There could be a new judicial inquiry into allegations of British involvement in the torture of terror suspects, following the publication of a US Senate report into interrogation methods.
Some of the more sensitive information surrounding the CIA's tactics was blacked out over security fears.
Former intelligence officer and security analyst Bob Ayres thinks UK officials may already be trying to save face:
Sir Malcolm Rifkind, the head of the UK's Intelligence and Security Committee, is seeking any intelligence relating to the UK that was redacted from the Senate report into the CIA.
It concluded that the CIA lied over its torture and interrogation programme developed in the wake of the 9/11 attacks.
The British government has admitted requesting the deletion of references to Britain's intelligence agencies for national security reasons.
UK government representatives had 24 meetings with members of the US committee responsible for the findings.
Some of the deletions are believed to relate to the British Overseas Territory of Diego Garcia.
There is escalating pressure on the British government not to extend an agreement allowing the US to use the territory in the Indian Ocean as a military base.
Andrew Tyrie, chair of the all-party parliamentary group on rendition, said any negotiations should address allegations that it was used by the CIA to render terror suspects around the world.
"The negotiations on the lease can focus minds on establishing the scope and limits of Britain’s involvement, direct or indirect, in extraordinary rendition," Mr Tyrie said.
"We are talking about kidnap and taking people to places where they may be maltreated or tortured."
The former Home Office minister, Lib Dem MP Norman Baker, who has taken a close interest in the atoll, said: "As it comes up for renewal, we need a full explanation of what happened in our name on that island."
It comes amid reports former foreign secretary Jack Straw was questioned by police investigating the abductions of two Libyans who say they were handed to Colonel Gaddafi and tortured by his regime.
Mr Straw was interviewed as a "witness" by Scotland Yard following claims the Government was complicit in the rendition of the two men and their families, the Sunday Times said.
Originally published at 17.21
