After the July bombings in London, a number of Pakistani immigrants living in Greece were illegaly detained and tortured by Greek agents working with MI6 agents based in Greece.
Despite attempted cover-up and and denials from both the Greek and British government, the MI6 agent who was present at the time has since been recalled to London and the British government has issued a D-notice forbidding the media from naming the lead MI6 agent - though the story has been covered by both The Times and The Guardian.
Related Links:
http://cryptome.org/br-gr-spies.htm
http://www.socialistworker.org.uk/article.php?article_id=8061