The article is basically worthless. Wealth follows a power law; saying 90x% of millionaires didn’t move is noise. The very wealthy are in fact moving; they don’t want to be subject to a tax jurisdiction that claims reach on global income. Now, they weren’t paying tax on that income before, so it’s not like it will make a huge impact on UK revenues, but I know that those folks tend to hire local professional services, bankers, etc; we’ll see if they keep doing business with the UK or look elsewhere, like the US. Smart money would be on the US + Dubai right now I think.

I've been to Dubai. I can't imagine moving there just to save some tax.