There are problems with photographers' rights on both sides of the atlantic. Police officers, security guards and citizens are often taking the (imagined) law in their own hands and harassing both professional and amateur photographers who are doing nothing wrong or illegal. In the US it is often suspected "terrorist" activities, in the UK the big hysteria is children in photos. (Why anybody would be fearful of peadophiles getting their sweaty hands on photos of fully clothed children, I can't imagine.)
Find some current UK news here and here.
Well, at least the government is not involved yet, see the article in Amateur Photographer.