Don't be. London is built to handle terrorism way better than most other cities. You'll notice no bins in the tube station, camera's on every street, more cops per square mile than most cities. It's all a legacy of the IRA era. I was a block from the Admiral Duncan pub when it got nail bombed in '99 by a neo-nazi. We heard the thump of the bomb going off and seconds later a bobby was running towards us shouting RUN!! That was scary. But within minutes the whole area was cordoned off with a medivac chopper on the scene and it was bustling with police and emergency services. The bomber was arrested the same night from CCTV footage. London's been dealing with terrorism in one form or another for decades. Al Qaeda is just the latest blip and, so far in London they're a lot less sophisticated than the IRA. Mark.