What the evidence shows

The wealth total broadly adds up. It estimates fortunes linked to people who left or reduced their UK ties; it does not measure the economic cost of their departures. The size of that cost remains unestablished by this table.

  • The table contains 14 entries, not a count of 14 individual emigrants or all wealthy people who left.
  • Four entries include shared family fortunes worth $49.8bn. That money is already part of the total.
  • We checked the published arithmetic and four residence-change records. We did not independently audit every fortune or move.
  • Leaving the UK can have economic effects. A person’s total wealth does not tell us their size.

What Bloomberg actually reported

On 5 October 2026, Bloomberg Business shared a story about people worth $160 billion leaving the UK. Its caption described the departures as a problem for London’s reputation.

The word worth matters. The headline does not explicitly say that $160 billion was transferred out of Britain or lost in tax. Our check explains the number Bloomberg used, without attributing a stronger claim to the publisher.

Sources: Bloomberg BusinessBloomberg

The published fortunes add up to $158.3 billion

Bloomberg’s chart lists estimated wealth linked to people who left or reduced their UK ties over two years. The values are a snapshot at 29 September 2026, in US dollars.

Adding the 14 rows gives $158.3 billion. Rounding that to the nearest $10 billion produces $160 billion. Bloomberg does not state that exact rounding rule, but the difference is compatible with ordinary rounding.

The table below reproduces the published entries. Two rows name two people. A star marks a shared family fortune. Neither a row nor a family estimate should be treated as a count of one person emigrating.

Sources: Bloomberg Billionaires Index and reportingBloomberg

Bloomberg chart transcription: US$ billions, values at 29 September 2026; * marks a shared family fortune
Published entryEstimated wealthReported destination
Lakshmi Mittal$40.8BSwitzerland, UAE
Shravin Bharti Mittal*$23.3BUAE
John Fredriksen$19.2BUAE
Mohamed Mansour*$18BEgypt
Ian and Richard Livingstone$11.2BMonaco
Nassef Sawiris$9.6BItaly, UAE
Guillaume Pousaz$6.8BMonaco
Troels Holch Povlsen*$5.3BDenmark
Alan Howard$5BSwitzerland
John Reece$4.1BMonaco
Anne Beaufour$4BSwitzerland
Chris Rokos$4BGreece
Jeremy Coller$3.8BSwitzerland
Leonidas and Nicholas Lazari*$3.2BCyprus

Some entries include family wealth

Four starred entries total $49.8 billion, or 31.5% of the $158.3 billion. They are already included in the total, so they must not be added again.

These figures include shared family fortunes. They do not show that every family member moved or that all the family’s assets left Britain. They also do not prove the estimate is inflated or justify subtracting the family amounts.

Sources: Bloomberg Billionaires Index and reporting

A person can move while a business or building stays

Imagine someone moving overseas while keeping a building in Britain. Their address changes, but the building can still be used here. Owning shares in a company is different from moving that company’s operations.

Those are examples of why wealth and economic impact need separate measures. We are not claiming that every person on Bloomberg’s list kept the same assets or made the same choices.

The Office for National Statistics records changes in residence separately from transactions such as money transfers. HM Revenue and Customs, the tax authority, also explains that some UK income and property gains can remain taxable after a person leaves.

Departures can still affect tax receipts, spending and future investment. The wealth table simply does not measure those changes.

Sources: Office for National StatisticsHM Revenue and Customs

We found records supporting four recent residence changes

We checked four original filings at Companies House, the UK company register. During 2025, they recorded declared residence changes to the UAE for Shravin Mittal, Monaco for John Reece, Denmark for Troels Holch Povlsen and Egypt for Mohamed Mansour.

These documents support recent changes for those four people. They do not determine where someone owes tax, establish why they moved, or show what happened to every relative or asset.

We have not checked every listed person’s full residence history. Equally, finding an older address would not undo a more recent residence-change record.

Sources: Companies HouseCompanies HouseCompanies HouseCompanies House

The available tax figures do not yet answer this question

New UK rules for foreign income and gains began on 6 April 2025. But the HMRC annual release checked for this article, published in July 2026, stops at 5 April 2025.

It also covers a broader group under the former rules on foreign income and gains, commonly called the non-dom rules. It is not a tax record for Bloomberg’s selected list. Those earlier totals cannot establish the later effect of these moves.

The Office for Budget Responsibility, the UK’s official fiscal forecaster, already allows for some departures and tax planning in its forecasts. Its April 2026 update still expected the combined reforms to reduce borrowing in later years compared with keeping the old rules.

That is a forecast, not money already collected or a result for these particular people. The OBR’s November 2025 report expected initial information on tax raised in early 2027 and stressed the uncertainty.

Sources: HM Revenue and CustomsOffice for Budget ResponsibilityOffice for Budget Responsibility

What we still need to know

Checked: the published wealth figures broadly support the headline, and four company-register filings support recent declared residence changes. Repeating a table’s arithmetic does not independently verify each fortune.

Still unclear: how these departures changed UK tax, spending, investment, jobs or output. We have not established that the impact is zero, that one policy caused every move, or that Bloomberg’s concern about London’s reputation is fabricated.

To estimate an economic cost, researchers would need to track when people left and what changed, then compare that with what would probably have happened if they had stayed. Different measures can overlap, so tax, spending and investment cannot simply be added together.

What could improve the picture: later tax results and evidence linking these particular moves to changes in UK activity. Until then, $160 billion tells us about estimated fortunes, not the size of the economic effect.

Sources: Office for National StatisticsHM Revenue and CustomsOffice for Budget ResponsibilityBloomberg

What is established

  • Bloomberg’s original headline and caption describe what the departing people are worth.
  • The 14 displayed estimates total $158.3bn; four shared-family entries total $49.8bn within that sum.
  • The table measures estimated wealth, not money transferred out or tax lost.
  • Four company-register filings support recent declared residence changes in 2025.
  • The tax sources checked distinguish earlier observations from forecasts of later effects.

What remains unknown

  • How each person’s UK tax changed after moving.
  • How this group’s moves changed UK investment, spending, jobs and output.
  • Independently checked valuations and full residence histories for every entry.
  • A measured effect on London’s reputation or the overall economic effect of the tax reform.

The story, in order

New tax regime begins
Residence-based foreign income and gains rules replace the previous non-dom regime; policy announcements preceded implementation

HMRC publishes annual data
The latest coverage still ends on 5 April 2025, before implementation

Wealth valuation snapshot
Bloomberg chart date; the article establishes the 2026 year

Bloomberg post published
Original Instagram timestamp 12:30:10 UTC; feature updated the same day after first publication on 4 October

YOUR TURN TO CHECK

Reproduce this investigation

Repeat the chart checks with a calculator or the downloadable CSV. You do not need confidential tax records to check what the headline's number represents.

You will need
A browser and calculator, or a spreadsheet application; Python is optional

What you can and cannot repeat

These steps reproduce published estimates and our arithmetic, not individual net worth or tax status. Full article access may require a subscription; the original public chart is linked separately. The chart transcription contains public facts, not Bloomberg's article text or images.

  1. Read the original wording

    Open Bloomberg's Instagram post. Notice that the headline describes what departing people are worth. Keep its caption about London's reputation separate from a quantified tax-loss claim.

    Keep in mind Do not turn a possible implication into a quotation the author did not make.

  2. Open the chart and its notes

    Read all 14 rows, the shared-family asterisks and the September 29 valuation date. Compare the chart with the downloaded CSV, which preserves each entry's estimate and source.

    Keep in mind Two rows each name two people. A row count is not an individual-emigrant count.

  3. Sum the estimates

    Sum estimated_usd_billion across every CSV row once. In a spreadsheet, the numeric values are in F2:F15. They are all in US$ billions.

    SUM(F2:F15) = 158.3
    ROUND(158.3 / 10, 0) * 10 = 160

    Keep in mind The second line demonstrates compatible rounding, not a published Bloomberg rounding instruction.

  4. Check the shared-family subset

    Filter family_shared_flag to True, then sum only the four remaining estimates. Divide by the full total if you want the share.

    23.3 + 18 + 5.3 + 3.2 = 49.8
    49.8 / 158.3 * 100 = 31.4592546%, or 31.5%

    Keep in mind This subset is part of the total. It is not an extra sum or an amount demonstrated to be overstated.

  5. Inspect the selected residence filings

    Open each linked form and find the field for country or state of usual residence, together with its effective date. The four 2025 changes corroborate recent moves for the named people.

    Keep in mind A company-register declaration is not an HMRC tax-residence ruling. It does not establish the destination of every asset or family member, or the reason for the move.

  6. Separate wealth, transactions and tax

    Read the ONS Capital account paragraph and HMRC guidance on UK income after moving abroad. These explain why a relocation does not automatically mean every asset leaves or every UK tax liability disappears.

    Keep in mind They do not establish that the economic effect is zero.

  7. Check whether the tax data cover the period you need

    Open HMRC’s July 2026 release and check the years in its workbook. Then read paragraph 3.60 of the OBR report and the April 2026 update. Separate tax results from before the new rules from forecasts of what might happen afterwards.

    HMRC latest annual coverage: 6 April 2024 to 5 April 2025
    New regime begins: 6 April 2025

    Keep in mind Neither an earlier aggregate nor a forecast settles the observed 2026 impact of Bloomberg's selected group.

Sources you can check

We independently transcribed the rendered chart and recomputed its sums using decimal arithmetic; a second reviewer parsed its visible text using integer tenths. The sum checks displayed estimates, not underlying personal balance sheets. The source chart remains available through its public link; full article access was via a publisher-posted gift link and may vary. Individual tax data were neither obtained nor inferred. No conversion between dollar wealth and pound tax flows was made.

Inspect the evidence

Source notes include the links and verification limits. The timeline opens in Excel or any spreadsheet app.

Photo credit and licence

Elevated, panoramic view of the urban skyline of the skyscrapers at the City of London during a colorful sunrise, England. Sven Hansche/Shutterstock.com. Shutterstock Standard Image License. Capture date not supplied. Resized and cropped for display. The homepage also uses a dark gradient and text overlay. The original stock file is not offered as a download.

Carousel photograph credits and licences

These credits cover the carousel photographs. Original stock files are not distributed here. The logo remains separate brand artwork.

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