Britain: a millionaire leaves every half hour, and the model behind it keeps running

Numbers keep circulating online: a millionaire leaves the UK every 30 minutes, a non-working immigrant arrives every minute, and the white British share of London has fallen from 98% to 36%. Part of this checks out, part is distorted, and the distortions hide a more interesting story - about an economic model built over 25 years that is now breaking down from two directions at once.

Start with what can be documented. Henley & Partners and New World Wealth estimate the UK lost about 16,500 millionaires in 2025 - roughly one person every 32 minutes. In 2024 the figure was 10,800 and in 2023 it was 4,200. So "every half hour" rounds a provisional 2025 estimate, not a long-run fact. One caveat: Henley uses modelled flow estimates, and critics note the UK's total millionaire population may still have grown on market returns.

Fig. 1. Net millionaire outflow from the UK, 2023-2025. Source: Henley & Partners, New World Wealth.

Where the capital is going​

Henley lists the drivers: abolition of non-dom status, higher inheritance tax, VAT on private school fees, retrospective taxation of trusts, and a tax take rising to about 37% of GDP - the highest since 1947. The wealth held by those leaving in 2025 is put at USD 91.8 billion. The UK is the only W10 country whose millionaire population shrank this decade: down 9% since 2014, against 40% average growth across the group and 78% in the US.

• scrapping non-dom status pushed out wealthy non-domiciled residents;
• higher inheritance tax and VAT on private schools reduced the UK's appeal;
• the loss of some Euroclear activity after Brexit weakened the City;
• in 2024, 88 companies delisted from the London Stock Exchange.

ℹ INFO Britain began losing its own capital before the migration turn fully took shape. Both are symptoms of the same fiscal logic: the state financed itself for years on foreign wealth, then started taxing that wealth heavily.

People: the numbers versus the slogan​

Now the "non-working immigrant every minute" claim. According to the ONS, net migration in the year to December 2025 was 171,000 - about 5.5 times below the 944,000 peak (year to March 2023). Overall, 813,000 people arrived and 642,000 left: roughly 1.5 arrivals a minute, not "a non-working immigrant a minute". The composition tells: 47% of non-EU migrants came to study, 23% to work and 14% to claim asylum. Most are students and workers, not dependants.

Fig. 2. Immigration and net migration to the UK, years ending December. Source: ONS.
Another fact that does not fit the slogan: Britons are leaving too. In 2025, 246,000 British nationals left, a net British outflow of 136,000. Non-EU nationals were 77% of all immigration, led by India.

Demographics: what actually changed​

The "98% to 36%" claim also needs precision. In 1961, 97.7% of Londoners were white. By 2021, white residents of all categories were 53.8%, while white British alone were 36.8%. The accurate version: from almost 98% white to 36.8% white British. At the 2021 census, white British residents were 42.9% of Birmingham, 48.7% of Manchester, 33.2% of Leicester, 31.8% of Luton, 24.0% of Slough and 14.8% of Newham.

Fig. 3. White and white British share of London, 1961-2021. Source: censuses, ONS estimates.
Schools offer a leading indicator. Department for Education data for 2025/26 show the white British share of pupils in England falling below 60% for the first time, to 59.7% (around 69% a decade ago) - just 22% in London. In 72 schools no white British pupils are recorded at all; in 454 more they are under 2%.

So why was it done?​

This is where conspiracy ends and economics begins. No single decision produced this; it was a series of choices that each looked reasonable on its own.

• growth without investment: after 2008 productivity stalled, and GDP was lifted by adding workers rather than capital;
• universities as an export industry: overseas students pay full fees and cross-subsidise domestic ones;
• the social sector: health and care visas plugged staffing gaps without raising pay;
• a tax base built on foreign capital: the City and non-doms funded the budget until they were taxed harder.

A second reading matters here. Some demographers attribute the shift not only to immigration but to differing birth rates, an ageing white population and internal migration: white Britons have moved out of big cities into suburbs and shires for decades. On this view immigration is not the root cause but an accelerant, and how deliberate it all was has no final answer. That argument is precisely what drives politics now.

For markets the conclusion is simple but harsh: both capital and labour are a tax base. When both leave, the budget must choose between spending cuts, new taxes or more borrowing.

The result has been symmetrical. The model pulled in capital and labour together, then began pushing both out: wealth taxes accelerated the millionaire exit, Brexit and visa limits cut off European inflows, and tighter student and care routes have cut net migration more than fivefold from its peak.

⚠ IMPORTANT The real question is not whether migrants were "imported" or why the wealthy left. It is that a growth model built for two decades on inflows of people and capital no longer reproduces itself. Who pays to restart it is what the next electoral cycle will decide.