London’s wealthiest non-domiciled residents are abandoning the city in unprecedented numbers as the UK’s tax landscape undergoes its most significant transformation in decades. The abolition of the non-domiciled tax status, effective April 6, 2025, represents a seismic shift for affluent individuals who previously enjoyed substantial tax advantages while residing in the UK. This change now requires all UK residents to pay taxes on their global income, eliminating a long-standing benefit that attracted wealthy foreigners to London.
Data from Companies House reveals that 3,790 company directors established residency abroad between October 2024 and July 2025, marking a 40% increase from the same period in 2023. Many of these departing wealthy individuals are heading to the United Arab Emirates, which has emerged as a primary destination due to its tax advantages and business-friendly environment. Other popular destinations include Italy and Spain, where more favorable tax regimes await those fleeing the UK. Recent statistics show that the total number of non-domiciled taxpayers has declined to approximately 83,000 individuals in the 2023-2024 tax year.
The exodus of wealth is real — directors voting with their feet as UAE, Italy and Spain offer tax havens London cannot match.
The impact on London could be substantial, despite the city still housing approximately 892,000 millionaires in 2025. The ultra-wealthy demographic has seen particular volatility, with the billionaire population dropping from 89 to just 36 in a single year. This exodus comes as the government projects that tax reforms will generate £33.8 billion over five years, though these projections depend on wealthy individuals remaining in the UK. London has now fallen to 6th place among the world’s wealthiest cities due to the exodus of high-net-worth residents.
Those staying in London are adapting their wealth management strategies, diversifying investments across prime real estate, technology ventures, sustainable projects, and luxury collectables. About 60% of new ultra-wealthy residents are pursuing investment pathways to maintain access to UK financial markets while minimizing tax exposure. The 2024-2025 period saw a staggering 157% increase in high-net-worth individuals leaving the UK compared to the previous year.
The Foreign Income and Gains regime replacing the non-dom system has fundamentally altered tax obligations for wealthy residents, particularly impacting company directors and self-made magnates in contemporary industries. With reports suggesting up to 16,500 millionaires may ultimately leave the UK, the long-term consequences of these tax policy changes remain to be seen for London’s status as a global wealth hub.
