This depends on the country you're living in. In Switzerland, for example, they made already back in 2012 the sad, fucking stupid decision to declare anything potentially psychoactive as a 'novel psychoactive substance' opening the road for sanctions, confiscation, and so on. Not the main or only, but certainly one of the reasons why I've left this country. The world is big and beautiful and it's nice to see more of it. But laws are just plain stupid, limiting and life-threatening all over the way.
Austria did more or less the same, but at least there the end-user, consumer, whatever isn't exposed to inhuman punishment if I'm right.
Germany tries, but they have this constitution court that declared analogue laws to be illegal. Yeah, at least something. And the EU declared the practice to make any psychoactives 'medicines' even if they have no indication yet (they used the term 'only potential to hurt' to be exact - it's definitely not the way I'd like to see it going, but it is a start) as illegal too.
But it's indeed an interesting unfortunate question.
I really don't get it why the UK seems to be the heart of the worldwide RC market somewhat when we'd have so many better places with better laws and (a bit) less mad capitalistic bastards to make profit with ...?