This seems a little bit strange to me US drones in the UK???
London Olympics Security Focuses on Deterrence: Use of Drones, Electric Fences, Missiles and More
Security is being tightened in and around London in the lead up to the 2012 Olympic games. UK officials spared no expense in trying to turn London into an impenetrable fortress— or at least making it appear so. With the horror of the 7/7 bombings carried out by al-Qaeda still lingering in the minds of Londoners along with the reality that the Olympics have long been an alluring target for terrorist groups—sometimes with tragic results—it is understandable that security officials will spare no expense in guarding the games. Moreover, it is not surprising that Olympic game attendees will happily sacrifice some of London’s charm and perhaps even some civil liberties in exchange for the comfort of what seems to be a secure environment…even if that means rolling out the 5,000-volt electric fences, unmanned aerial vehicles (UAV), and surface-to-air missiles.