In response to the question....
I think there's a lot wrong with the UK. There aren't a great deal of opportunities for young people, our corrupt media is constantly given far more credence than it deserves, and while I disagree with those who sensationalise it by claiming we live in a dictatorship, I can't honestly say that I consider myself a citizen of a democracy either.
There's massive levels of inequality between parts of the country - there are areas of severe social deprivation where people just can't get out, as recorded by Nick Danziger in the 90s (and despite Labour's assurances, I'm fairly sure have not somehow vanished into thin air in the intervening time). We have an excellent system of higher education, with more than our fair share of the top academic institutions in the world - and yet huge numbers students from particular income brackets have been effectively excluded because of the debt it would place on them.
Having said that, I don't hate it here. I wouldn't call myself 'proud' to be British, but I still think there's a lot to like. While it's somewhat damaged, I'm very skeptical of the claims made by people like Winstone about the NHS (my cousin works in a hospital in London) and can't help but feel they're a bit sensationalised. There are some beautiful towns, and depending on where you live, of course, it's not nearly as dangerous as the media would have you think.
I also think people in the UK have a tendency towards a subtle kind of open-mindedness and tolerance for people with different viewpoints that I suspect is rarer elsewhere than we might think. Foreign friends who I talk to often seem to have trouble with the idea of disagreeing with your government, or an old person, or someone in authority. In the UK, they're fair game - and that's a good thing. We also have a long history of pretty epic changes to our society happening relatively peaceably - the British aren't strangers to change or difference, and that's something to be proud of.
Would I emigrate? Probably, but more out of desire to see other places than any kind of hatred for the UK. As I say, there's a lot wrong but I don't hate it here.