The UHNW Multi-Homer’s Wishlist: Green, smart, serviced and island

London tops the table for the most resident multi-millionaires and for HNW importance, but not for billionaire population

London is still the "most important" world city for the ultra-rich, says Knight Frank in its tenth annual Wealth Report.

There are more billionaires tooling around the globe than ever before, according to specialist researchers at Wealth-X, but the proportion of the world owned by these richest-of-the-rich individuals slipped…