I started typing up a long list of things which are good in the UK but gave up because everybody is looking for something different, and everybody has different options in life. I come from Czechoslovakia. Been in own business since 1978.
But I do like the transparency in personal, corporate and govt dealings, and the well set up (tested over centuries) legal system where you know you won't get strung up for some piece of crap, and the lack of contextuality in just about everything.
I could write for hours about how hard it is to do business in the rest of Europe, for cultural, xenophobic, language, etc, reasons.
Only America is good or better than the UK in the transparency, lack of prejudice, etc.