I saw a report on this on Fox News late yesterday morning. I don’t remember all the details but will try to go with what I can remember.
The US has been after this guy since the late nineties and the Brits have blocked his arrest on not one, but several occasions. Seems that he worked for MI5 after convincing them that he was a double agent and that’s why they didn’t want him arrested. He sure pulled the wool over their eyes and kept it there for a long time. This person’s superior was arrested in England (I don’t remember why) and one of his subordinates was arrested in Oregon, I think, for planning to set up a terrorist training camp in the US, yet this individual remained untouchable until after the recent bombings. I haven’t checked Fox’s web site today to see if anything on this story has been posted there yet. There does appear to be some truth to it, though.