Under present laws, eg. Terrorism Act 2000, people can be held incognito for up to 30 days. In other words, you just disappear. People think you are dead. They would most likely call the police. This only happens to terrorists, of course. Right?
Well, actually it happened to me. 36 hours inside. For two nights my girlfriend thought I was dead. She was indescribably upset about it. This is how it goes. What did I do? I took some photographs in the centre (yes, this is the correct way of spelling "center") of town with my mobile phone and some dork behind one of those ridiculous cameras thought I was taking a picture of a manhole cover which could be used for terrorist activities.
http://news.slashdot.org/comments.pl?sid=1120703&cid=26781867
