Ultra wealthy are looking to leave the U.K. thanks to tax hikes—but the CEO of $1 billion tax platform says it’s their ‘social responsibility’ to stay

UK tax rises tied to the incoming Labour government and Rachel Reeves' Budget are driving significant high-net-worth migration, with the Henley Private Wealth Migration Report 2025 noting about 16,500 millionaires leaving in 2025—around $91.8 billion—and a 9% reduction in the millionaire population over the past decade. Fintech CEO Martin Ott (Taxfix, >$1bn valuation) reports some wealthy clients are considering relocation but counsels against leaving, warning of long-term ecosystem damage and brain drain; the story signals modest but meaningful long-term risks to UK entrepreneurial capital formation and investor positioning.

Analysis

Market structure: The reported 16,500 millionaire departures (~$91.8bn) is concentrated wealth flight, not broad retail outflows, so winners are low-tax jurisdictions, offshore wealth managers and luxury real estate in GCC; losers are UK domestic wealth-management, early-stage VC, luxury retail and residential REITs that rely on HNWI spending. Expect downward pressure on sterling and selective widening of gilt spreads as private deposits and family-office capital repatriate; UK small/mid caps tied to domestic consumption and property will see the largest EPS hits over 3–12 months.

Risk assessment: Tail risks include a fiscal spiral where lost tax base forces deeper hikes or asset taxes, accelerating capital exodus (low probability, high impact) and a feedback loop into GDP growth; $91.8bn equals ~3% of UK GDP, so second‑order effects on IPO activity and M&A funding could cut UK VC deal flow by 20–30% over 12–24 months. Near term (days–weeks) watch FX and gilt volatility; medium (3–12 months) watch startup funding rounds and property transactions; long term (1–5 years) risk is structural brain drain reducing UK tech competitiveness.

Trade implications: Tactical: short UK equity exposure via EWU (2–3% book) and buy GBP puts (3–6m expiry) to hedge sterling risk; hedge with 1–2% GLD longs as tail hedge. Sector rotation from UK domestic consumer/REITs (trim LAND.L, BLND.L) into global wealth managers and Gulf real estate/financials; favour selectively long UAE property/financial plays if regulatory clarity persists.

Contrarian: The market underestimates stickiness of entrepreneurial capital—many HNWIs may delay moves until realization events, keeping VC pipelines alive temporarily; a cyclical overweight to UK tech at 12–24 months could pay off if policy stabilizes. Don’t reflexively sell high-quality UK multinationals with offshore revenues; the mispricing window is in domestically exposed small caps and property stocks, not Tier-1 exporters.

Key Decisions for Investors

• Establish a 2–3% short position in EWU (iShares MSCI United Kingdom ETF) as a directional hedge against further HNWI outflows; target a -15% move within 3–12 months, place a stop-loss at +6% from entry.
• Initiate a 1–2% notional long USD/GBP (or short FXB) position using spot/forwards or options; target GBP down 5–8% within 3 months, stop-loss at 3% adverse move; scale out if BoE signals monetary tightening or Budget concessions.
• Buy 0.5–1% notional 3–6 month GBP put spread (buy 5% OTM, sell 10% OTM) to cap premium cost while retaining downside protection on sterling; size to cover UK equity exposure.
• Trim 20–40% of exposure to UK domestic property and luxury retail names (examples: LAND.L, BLND.L, BRBY.L) within 30 days and redeploy proceeds into 1) GLD (1–2% of portfolio) as a tail hedge and 2) global wealth managers/large-cap exporters (e.g., UBS) for defensive yield.
• Monitor three catalysts over next 60 days before adding size: 1) UK Budget details (tax cliff notes), 2) BoE communications on FX/gilt intervention, 3) month-over-month UK VC deal count and London IPO pipeline; add to shorts if two of three worsen.