For generations, Britain understood the value of attracting wealthy people.
London became one of the world’s great financial centres partly because international capital was welcomed, international businesses were encouraged to establish themselves in Britain, and wealthy individuals from around the world were prepared to make the UK their home.
But the relationship between Britain and private wealth is changing.
The question is no longer simply whether the UK is a high-tax country. The more interesting question is whether Britain is becoming a less attractive place for internationally mobile wealth.
That is a much more important question because wealthy individuals do not make decisions about residence on the basis of a single tax rate. They assess an entire jurisdiction.
And increasingly, they have alternatives.
Wealth Is Mobile
Most taxpayers cannot choose where they live based primarily on taxation.
A wealthy individual can.
This does not mean that someone will move simply because another country has a lower tax rate. Family, business interests, education, language, lifestyle and existing investments all matter.
But once wealth becomes sufficiently substantial, taxation becomes one factor in a much larger decision.
And increasingly, that decision is being made internationally.
The wealthy are not necessarily asking:
“Which country has the lowest taxes?”
They are asking:
“Which jurisdiction offers the best combination of tax, stability, lifestyle, investment opportunities and access to markets?”
That is a very different question.
It is also why wealth migration should not be confused with a simple search for lower taxation. The jurisdictions competing for internationally mobile individuals are offering broader propositions: residence, security, infrastructure, investment opportunities, professional services and, increasingly, the ability to maintain an international lifestyle.
Britain’s Historic Advantage
Britain’s historic advantage was never simply low taxation.
It was the combination of the City of London, the English legal system, deep capital markets, a sophisticated professional-services industry, political stability and an internationally connected economy.
The UK could therefore impose relatively significant taxes without necessarily losing its position as a destination for international wealth.
The system also historically provided an important incentive for internationally mobile individuals through the non-domiciled regime.
In broad terms, before the 2017 reforms, a UK resident who was not UK domiciled could, subject to detailed rules, use the remittance basis so that certain foreign income and gains were taxed differently from income and gains arising in the UK. HMRC’s historical guidance confirms that the remittance basis was available to qualifying non-domiciled residents before the reforms introduced from April 2017.
But the regime had already been significantly restricted.
From 6 April 2017, the UK introduced deemed-domicile rules. An individual who had been UK resident for at least 15 of the previous 20 tax years could become deemed UK domiciled for tax purposes, losing access to the remittance basis and becoming subject to the arising basis on worldwide income and gains. HMRC’s guidance records the 15-of-20 rule and the changes introduced from April 2017.
The message was becoming clearer:
Long-term residence in Britain increasingly meant long-term exposure to the British tax system.
This was not an isolated development. The reform of the non-domicile regime had been under political discussion for years, with the House of Commons Library documenting the progressive tightening of the rules and the government’s move away from permanent non-domiciled status.
The Problem Is Not One Tax
The debate about whether Britain is hostile to wealth often focuses on individual tax rates.
That misses the bigger picture.
A wealthy individual does not look at income tax in isolation.
They look at income tax, capital gains tax, dividend taxation, inheritance tax, property taxes, stamp duty, trust taxation, the treatment of offshore assets, the cost of compliance and, increasingly, the predictability of the rules.
It is the combined effect that matters.
In the 2022–23 tax year, the UK’s headline inheritance tax rate remained 40%, with a £325,000 nil-rate band and a residence nil-rate band of up to £175,000, subject to the relevant conditions. These thresholds and rates were confirmed in HM Treasury’s 2021 tax legislation and rates publication.
None of these figures, taken individually, makes Britain an uncompetitive jurisdiction.
The issue is the accumulation of them.
For an internationally mobile individual with substantial income, investments, property and an estate, the relevant calculation is the total cost of living and investing within the jurisdiction rather than the headline rate of any single tax.
Then There Is Uncertainty
For wealthy individuals, certainty can be almost as important as the tax rate itself.
An investor making a ten-year investment decision does not simply ask what the tax rate is today.
They ask what the tax regime is likely to look like in five or ten years.
This becomes particularly important when governments repeatedly signal that the taxation of wealth, offshore structures, property and internationally mobile individuals is under review.
The issue is therefore not simply whether a tax is high.
It is whether the direction of policy provides sufficient confidence that the rules will remain predictable.
The UK’s Spring Statement in March 2022 is instructive in this respect. The government was simultaneously seeking to reduce personal taxes, reform the tax system and encourage investment and enterprise. It announced a future reduction in the basic rate of income tax and described its objective as creating a more productive and growth-oriented tax environment.
That is an important counterpoint to any simplistic argument that Britain was simply moving towards ever-higher taxation.
The policy environment was more complicated.
Britain was trying to balance competing objectives: raising revenue, maintaining public services, supporting investment and remaining attractive to business and capital.
But wealthy individuals do not experience taxation as a series of isolated announcements.
They experience it as a cumulative environment.
And perception matters.
London Is Different
There is an important counterargument.
London remains London.
It has few genuine global competitors in terms of financial services, private equity, investment banking, legal services, wealth management, education and international connectivity.
A wealthy entrepreneur may therefore be prepared to pay more tax in exchange for access to the opportunities London provides.
This is why predicting a mass departure of wealthy individuals from Britain is too simplistic.
People do not move their lives as easily as they move money.
The question is therefore not whether everyone will leave.
It is whether enough people at the margin will choose somewhere else.
That is where the economic consequences begin.
The Marginal Investor Matters
The UK does not need to lose every wealthy individual for policy to have an economic effect.
If a family office that might previously have established itself in London chooses Geneva instead, that matters.
If an entrepreneur chooses Dubai rather than London as the base for a new international business, that matters.
If a private equity executive chooses Monaco, Switzerland or another European jurisdiction as a residence while continuing to invest in Britain, the UK may still retain the investment — but not necessarily the individual, the consumption, the professional-services revenue or the future capital.
This distinction is important.
Capital can remain invested in Britain while the people controlling that capital move elsewhere.
That concern was no longer purely theoretical by 2022. Henley & Partners reported that the UK had traditionally been one of the world’s major destinations for migrating millionaires, but that the trend had reversed, with the organisation projecting a net outflow of approximately 1,500 HNWIs from the UK in 2022.
Henley also estimated that between 2017 and 2022 the UK had experienced a cumulative net loss of approximately 12,000 millionaires. Its analysis pointed to factors including Brexit and rising taxes on high-net-worth individuals, while noting that the UK continued to attract wealthy individuals from Africa, Asia and the Middle East.
The figures should not be treated as proof that Britain’s financial position was collapsing.
But they should be treated as a warning.
The New Competition
Britain is no longer competing only with other major European economies.
It is competing with jurisdictions that have deliberately positioned themselves around mobile wealth.
Monaco offers proximity to Europe and a distinctive personal-tax environment.
Switzerland offers political stability, sophisticated wealth management and a long-established private-banking infrastructure.
The UAE has developed itself into a major international centre for entrepreneurs, investors and internationally mobile families.
Italy, Portugal, Greece, Cyprus and Malta have all, in different ways, attempted to attract internationally mobile individuals through combinations of tax incentives, residence programmes, investment opportunities and lifestyle.
This competition is part of a broader shift already visible in the international wealth landscape. The wealthy are increasingly looking at jurisdictions outside their traditional homes as alternatives for residence and wealth planning.
The competition is therefore becoming broader.
The wealthy individual can increasingly separate where they live from where they invest.
That is potentially much more significant than simply persuading someone to transfer a bank account.
This Is Not an Argument for Zero Tax
There is an important distinction between being tax competitive and being tax-free.
Successful countries need tax revenue.
Wealthy individuals benefit from functioning courts, infrastructure, education systems, financial markets and political stability.
The argument is not that wealthy people should pay no tax.
The argument is that governments need to recognise that mobile wealth has choices.
A tax system can extract more from existing taxpayers.
But at some point the question becomes whether the additional revenue is worth the behavioural response it creates.
That is the difficult policy calculation.
It is also why debates about wealth taxation should consider not only the amount of tax that can theoretically be collected, but the economic activity associated with the people who pay it.
The same principle applies internationally. When governments change the economic environment for mobile capital, investors can respond not only by moving assets but by changing where they live, operate businesses and establish their families.
The Real Asset Is Confidence
Britain’s greatest competitive advantage may not have been its tax system at all.
It was confidence.
Confidence that London would remain an international financial centre.
Confidence that contracts would be respected.
Confidence that capital could move freely.
Confidence that the legal system would function.
And confidence that the rules would not change dramatically every few years.
Tax policy can therefore damage competitiveness in two ways.
First, through the actual amount of tax paid.
Second, through the perception that the direction of travel is against private capital.
The second can be harder to measure.
It may also be more important.
A jurisdiction can remain highly competitive on paper while becoming less attractive in the minds of the people who have the greatest freedom to choose where they live.
That distinction matters.
Britain Is Competing for People, Not Just Capital
This is where the issue becomes broader than tax.
The UK does not simply compete for foreign direct investment.
It competes for entrepreneurs, investors, family offices, executives, fund managers, professionals and the families that surround them.
Those individuals generate economic activity well beyond their personal tax liabilities.
They purchase property. They employ staff. They use professional advisers. They establish companies. They invest in businesses. Their families consume education, healthcare, hospitality and other services.
The economic value of retaining an internationally mobile individual can therefore extend far beyond the tax paid directly by that person.
The reverse is also true.
If the individual moves, some of that economic activity can move with them.
The experience of Malaysia’s MM2H programme provides a useful illustration of the broader principle: when the terms of a residence programme change abruptly, the effect can extend beyond immigration policy to perceptions of investment confidence and jurisdictional reliability.
Where Does This Leave Britain?
Britain is not about to become irrelevant to global wealth.
London’s financial infrastructure is too deep, its professional-services industry too sophisticated and its international position too established.
But that should not be confused with immunity.
Wealth is increasingly international.
Families can live in one country, hold companies in another, invest through a third and maintain businesses across several jurisdictions.
The countries that understand this will compete for that capital.
The countries that assume historical advantages are permanent may eventually discover that they are not.
Britain therefore faces a strategic choice.
It can treat wealthy individuals primarily as a source of additional tax revenue.
Or it can treat internationally mobile wealth as an economic asset that must be attracted, retained and competed for.
Those two approaches are not necessarily mutually exclusive.
But they produce very different outcomes.
Britain’s historical strength was that it managed to combine taxation with an environment that remained highly attractive to international capital and talent.
The challenge is to preserve that balance.
The Question Britain Should Be Asking
The important question is not whether Britain is currently the highest-tax jurisdiction in Europe.
It isn’t.
Nor is the question whether every wealthy person will leave.
They won’t.
The real question is whether Britain is becoming incrementally less attractive at the margin.
If the answer is yes, the consequences may not appear immediately.
They may appear in where the next entrepreneur establishes residence.
Where the next family office opens.
Where the next investment company is headquartered.
Where the next generation of wealthy families chooses to educate their children.
And where the next £100 million of capital is managed.
Britain does not need to lose its position as a global financial centre for this to matter.
It only needs to lose enough of the marginal decisions that once would have gone its way.
For a country that has spent centuries building itself into one of the world’s great centres of capital, that is a question worth taking seriously.