I think that in post-Referendum febrile Britain, with views often polarised and some very illiberal (on both sides of the political spectrum) attitudes being voiced, it would be easy to conclude that we are an intolerant unwelcoming country. However, our universities are very international, (compared with the rest of the EU) and not inward-looking. They are expensive but Britain has a disproportionate number of world-ranked unis.
Recently I was reading about the problems in French higher education - the seemingly egalitarian approach where everyone with a bac can enter (grandes ecoles aside), cheap, but with a massive fall-out rate, huge class sizes, minimal support. With that in mind, I would be very careful about opting for a uni outside the UK in Europe. Some will be very good but do due diligence first.
I think part of the problem with Britain is that the attitudes of educated, liberal-leaning people have changed dramatically over the past few decades, perhaps creating a bigger gulf between them and others in the country. In Europe arguably social attitudes are changing at a slower pace and so there is less of an obvious disjunct between the socially liberal and the more conservative.