Britain's tax authority has put a dedicated compliance manager on every billionaire with UK ties — bad news for the wealthy, and possibly worse news for Britain's tax take.

• HMRC is using its own records, public data, and information from foreign governments to map billionaires' businesses, trusts, and offshore structures.
• The UK has no exit tax, so anyone targeted can simply move to Monaco, Dubai, or the UAE and keep their money.
• Britain is already losing millionaires faster than any other country, while the UAE, the US, and Switzerland gain them.
• Billionaire numbers in Britain barely moved last year — a handful created, nearly as many gone.
• Wealth today sits in stocks and crypto, not factories, so it travels with its owner.

Outlook: Expect more departures rather than more revenue, and expect US states like California to study the idea anyway.