Yes the UK is Nationaly clear cut and the same (at the moment) on lawful radio reception/use. However devolved governments (Wales, Scotland, Northern Ireland) could easily pass their own laws on such matters.If you are confused there in the UK, imagine a Yank trying drive cross country and knowing if their scanner is legal or not.
Lynn N4LEH
I guess with US having so many states it must be even more confusing especially if one type of installation is OK (home/base) and another (mobile) may not be.