2. We have enough art, culture and shopping to keep anyone entertained.
A rich cultural history like London’s is not to be sniffed at, and millionaires in the UK love it because a lot if it is very expensive (a box at the Royal Opera House doesn’t come cheap).
There are enough opera houses, ballets, art galleries and monuments to wealth to impress even the most staunch of Russian billionaire mother-in-laws. The ultra-rich are human too, remember. If they’re going to move to a whole new country they’ll want plenty to entertain themselves with.