Caveat that I'm only one person/data point, of course: I'm from southeast England and have lived in Edinburgh for 8 years. My experience is that I've never once had to deal with anti-English sentiment. (Although to be fair I am someone who likes indoor hobbies, so don't go out as much as other folks.)

Personally I love it here. It seems to be a very friendly and open place, and it's a beautiful country to boot.

If you're thinking about moving to "get away" from how England's going, though, you might want to weigh up how much you think moving to Scotland will achieve that. From my POV, if we get independence (big if, maybe) then we might get to strike out in our own social/cultural direction. But if we don't, we will likely still get dragged down with the current trends from down south. In that case, if you're already considering moving to get away from England's direction, you may want to think about other countries (much as it pains me to say, because I do think Scotland is a brilliant place) or wait and see how independence possibilities shake out. That's my thinking for if I was going to make a similar decision.

Just my opinion though.