The latest edition of the Sunday Times Rich List offers an unusually stark snapshot of Britain’s shifting relationship with global wealth. What has long been described in whispers by wealth advisers and private bankers now appears in aggregate form: a steady departure of billionaires and multimillionaires from the UK, coinciding with recent tax reforms and political change. The 2026 rankings suggest that the country’s appeal as a base for the ultra-rich is weakening at a measurable pace, with implications that extend beyond prestige into tax revenues, investment flows and London’s status as a global financial hub.
According to the data, one in six individuals who appeared on the Rich List just two years ago are no longer present in the 2026 edition. Nearly a third of UK citizens in the main list of 350 are now living outside the British mainland. In total, at least 60 entries from the 2024 list have disappeared, many because their subjects have relocated abroad. Meanwhile, 15 foreign nationals who featured last year have also been removed after leaving the UK. The scale of change is significant enough to suggest not isolated departures, but a broader pattern of relocation.
The backdrop to this shift is a changing tax and political environment. Since the arrival of Keir Starmer in Downing Street and the fiscal reforms introduced by Rachel Reeves, Britain has begun dismantling elements of its long-standing “non-dom” regime, which previously allowed wealthy foreign residents to shield overseas income from UK taxation. For decades, successive governments had used this system alongside attractive visa policies to draw in global fortunes. Now, however, advisers say the incentives are reversing, and the UK is increasingly viewed as a high-tax jurisdiction with elevated long-term exposure risks.
One symbolic departure that captured attention last year was steel magnate Lakshmi Mittal’s move from London to Geneva. Once a high-profile figure in British business and philanthropy, Mittal’s exit is seen by some advisers as emblematic of a broader trend. While individual motivations vary, wealth managers describe a “steady drip” of similar decisions, often unreported publicly until they appear indirectly in residency filings or updated corporate disclosures. For many in the sector, the significance lies less in any single name than in the cumulative effect of many such exits.
Behind the headline figures are a series of notable relocations. Emirati businessman Mahdi al-Tajir is now based in Dubai. American financier Ellis Short has returned to the United States. Camden Market owner Teddy Sagi is in Israel, while property investor Yakir Gabay has moved to Cyprus. Slavica Ecclestone, formerly married to Bernie Ecclestone, now resides in Monaco. Others have been more outspoken. Norwegian shipping magnate John Fredriksen has described Britain as having “gone to hell” as he closed his Chelsea office and moved to the United Arab Emirates, while investor Christian Angermayer called the removal of non-dom status a “death blow” before relocating to Switzerland.
Tax advisers say these moves are not spontaneous but carefully calculated responses to shifting rules. One global adviser noted that all of his ultra-wealthy UK-based clients have now left the country, citing policy changes as the decisive factor. Switzerland, Italy and the United Arab Emirates are repeatedly cited as preferred destinations, combining favourable tax treatment with perceived stability. The most significant concern, according to advisers, is not only income tax but the potential exposure of global assets to UK inheritance tax rules, which can reach 40 per cent. For some, this creates a level of long-term uncertainty that outweighs the benefits of remaining in London.
The departure trend is not limited to foreign nationals. Data from Companies House filings suggests that a growing number of British-born wealth creators are also relocating. More than 111 individuals in the current Rich List are now officially resident outside the UK mainland. Among them are industrialists, property magnates and investors whose fortunes were largely built within Britain. Names linked to sectors from hospitality to hedge funds have been associated with moves to Monaco, Dubai, Cyprus and the United States, reflecting a widening geographical dispersal of British wealth.
The scale of capital involved is substantial. Analysis of the 2026 Rich List indicates that more than 30 per cent of total UK wealth tracked in the rankings—around £784 billion—is now controlled by individuals living outside the British mainland. Monaco alone hosts 25 of the listed individuals, accounting for roughly a tenth of the total wealth represented. The United States, Switzerland, the Channel Islands and Dubai also feature prominently as alternative bases for British-linked fortunes.
Despite the outflow, the picture is not one-sided. A new generation of billionaires continues to emerge within the UK, including founders in technology and healthcare-related industries. These arrivals partially offset departures, but analysts suggest they do not yet match the scale of wealth leaving. The result is a more fluid and internationally dispersed wealth map, rather than a stable concentration in London.
Economists caution that the implications for the Treasury are complex. Paul Johnson, former head of the Institute for Fiscal Studies, notes that while HM Revenue & Customs has strong visibility over income, it has far less precise data on asset-based wealth such as dividends and holdings. This creates uncertainty about how much revenue is lost when high-net-worth individuals relocate. Some may have contributed relatively little in tax terms while resident, while others represent significant fiscal losses once they leave.
Johnson also questions whether recent reforms will achieve their intended fiscal goals over time. While initial revenues may rise in the short term, he argues that behavioural responses—particularly relocation and changes in investment structures—are difficult to predict. The central tension, he suggests, lies in balancing fairness in taxation with maintaining the UK’s attractiveness to global capital.
The broader question raised by the 2026 Rich List is whether Britain is witnessing a temporary adjustment or a structural shift. The data suggests that wealth mobility is accelerating at the highest levels, with London increasingly competing against a network of low-tax, high-stability jurisdictions. Whether the UK can retain its historic role as a magnet for global fortunes now depends not only on its economic fundamentals, but on whether it can reverse a growing perception among the super-rich that staying may no longer be worth the cost.
