Well, the usual millionaires fleeing data for the Uk is the Henley & Partners report[0] (a wealth management firm, which is not a reputable source for these statistics, they simply want to attract clients, so its advertising). That reports 16,500 millionaires leaving the UK in 2025.
This report has been critisiced, with the data likely compeltely or partially fabricated [1]. [2] provides a graph for millionaires by year (note covid data unreliable) and you can see the number remains steady, so therefore if there was net migration it must be made up for by new millionaires anyway. In fact [3] (with UBS data) suggests the number of millionaires went up by 20% between 2017 and 2025 in the uk, despite 2% migration.
Well, the usual millionaires fleeing data for the Uk is the Henley & Partners report[0] (a wealth management firm, which is not a reputable source for these statistics, they simply want to attract clients, so its advertising). That reports 16,500 millionaires leaving the UK in 2025.
This report has been critisiced, with the data likely compeltely or partially fabricated [1]. [2] provides a graph for millionaires by year (note covid data unreliable) and you can see the number remains steady, so therefore if there was net migration it must be made up for by new millionaires anyway. In fact [3] (with UBS data) suggests the number of millionaires went up by 20% between 2017 and 2025 in the uk, despite 2% migration.
[0]: https://www.ftadviser.com/content/e80ff28f-97fb-4e85-811f-c0...
[1]: https://taxpolicy.org.uk/2025/07/27/henley-partners-milliona...
[2]: https://taxjustice.net/press/millionaire-exodus-did-not-occu...
[3]: https://taxjustice.net/press/millionaire-exodus-claim-backtr...