Investment Strategy for Ultra-High-Net-Worth Individuals (£30m+)

The investment and planning needs of an ultra-high-net-worth (UHNW) individual — broadly defined as someone with £30 million or more in net investable assets — are qualitatively different from those of a high-net-worth (HNW) individual managing a £2–5 million portfolio.

The difference is not merely one of scale. At £30m+, entirely different investment classes become accessible; the family office model becomes cost-effective; IHT liabilities are large enough to require a coordinated, multi-instrument response; and the complexity of investment management, tax, legal, and governance makes multi-disciplinary professional support not just useful but essential.

This guide provides an overview of the UHNW investment landscape — asset allocation, private equity access, the family office decision, and estate planning at this level.

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The UHNW Threshold: What Changes at £30 Million?

The distinction between HNW and UHNW is not merely semantic. At £30 million of investable assets:

• Access to investment classes: direct private equity deals, co-investments, direct lending, real asset infrastructure, and bespoke structured products become practically accessible. Minimum investment cheques of £5–10 million per deal become proportionate to the portfolio.
• Cost-effectiveness of structures: a single family office (SFO) — with employed CIO, legal, and tax staff — becomes cost-effective at roughly 0.5–1% of assets. A £50 million portfolio generating £5 million in investment returns can absorb a £300,000–500,000 annual SFO running cost.
• The scale of IHT liability: a £30 million estate (assuming a nil-rate band of £325,000 and no other reliefs) carries an IHT liability of approximately £11.9 million. This is large enough to justify — indeed, to require — a serious, multi-instrument estate planning programme.
• Governance complexity: a UHNW estate typically includes multiple asset classes, multiple jurisdictions, multiple legal entities, and multiple family members with different interests and tax positions. Governance structures — family charters, family investment companies, trust structures — become essential.

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UHNW Asset Allocation

The investment strategy of major endowments and family offices provides useful benchmarks for UHNW portfolio construction. Cambridge Associates' research on endowment models consistently shows that the highest-returning endowments have the highest allocations to private assets — private equity, private credit, real assets, and hedge funds.

The Endowment Model Adapted for UHNW

A representative UHNW asset allocation, based on institutional endowment practice:

Public equities: 35–45% Global diversification (developed and emerging markets). At this scale, individual security selection by an in-house team or specialist manager becomes viable alongside index funds. Smart factor tilts (value, quality, small-cap) can be implemented cost-effectively.

Private equity: 15–25% The single most important differentiator of the endowment model. Private equity (buyout, growth equity, venture capital) has consistently delivered higher returns than public equities over 10–20 year periods, at the cost of illiquidity and capital call risk.

Private credit: 5–10% Direct lending, mezzanine debt, and distressed credit. Provides income at typically 8–12% per annum (target; not guaranteed) and is less liquid than public bonds. Fills the return gap left by the low yields on high-quality public bonds.

Real assets: 10–15% Direct real estate (commercial, residential, industrial, hotel), infrastructure (energy, transport, telecoms), and natural resources (timberland, farmland). Provides inflation protection and income.

Hedge funds and absolute return: 5–10% Provides genuine diversification. Long/short equity, global macro, and multi-strategy hedge funds target returns uncorrelated with traditional asset classes. Access at this scale allows investment in the top-quartile managers who are often closed to smaller investors.

Bonds and cash: 5–10% Predominantly high-quality sovereign and investment-grade corporate bonds. The liquidity buffer and crisis hedges of the portfolio. Held in sufficient quantity to fund operating needs and capital calls without forcing sales of illiquid assets.

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Private Equity at the UHNW Level

Private equity is the investment class most clearly associated with UHNW returns premium, and it warrants detailed attention.

Fund Investment (LP Interest)

The most straightforward route to PE exposure is investing as a limited partner (LP) in a PE fund. The fund manager (the general partner, or GP) raises capital from institutional investors and family offices, deploys it into portfolio companies over a 3–5 year investment period, and distributes proceeds over a subsequent 5–7 year harvest period. Total fund life: 10–12 years.

Typical terms: 2% management fee per annum on committed capital; 20% carry (profit share above an 8% hurdle rate).

Access: top-tier PE funds (Blackstone, Apollo, KKR, Carlyle, Warburg Pincus, Apax, CVC) are significantly oversubscribed. Access requires an established relationship with the fund's investor relations team, typically built over years. Most top-tier funds require a minimum commitment of USD 5–10 million.

Co-Investment

Co-investment is the most attractive form of PE access for UHNW investors who can evaluate individual deals.

The GP invites selected LPs (or other investors) to invest directly into a specific portfolio company alongside the fund. The co-investor invests their own capital in the deal, typically on the same terms as the fund — but without the management fee and often without (or with reduced) carry.

The advantage: co-investment provides PE exposure at zero management fee and reduced or zero carry. A £5 million co-investment alongside a fund that charges 2% / 20% effectively saves £100,000 per annum in management fees and a large portion of the carry.

The requirement: the co-investor must be able to perform due diligence on a single company, commit capital quickly (often on a 2–4 week timeline), and accept the full concentration risk of a single deal. At £30m+, these requirements are proportionate.

The secondary PE market: UHNW investors can also buy existing LP interests in PE funds on the secondary market (buying from an LP who needs liquidity before the fund's natural maturity). Secondaries are typically purchased at a discount to net asset value, providing an attractive entry point and a shorter time to distribution than a new fund.

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The Family Office Decision

The family office is the institutional vehicle through which UHNW families manage the full complexity of their financial lives. The term covers a wide spectrum, from a single employed chief investment officer (CIO) to a full operation with 20+ staff managing investments, tax, legal, compliance, estate planning, insurance, and family governance.

Single Family Office (SFO)

An SFO is a private company employed exclusively by one family. It provides:

• In-house investment management (or oversight of external managers).
• In-house tax and legal coordination.
• Estate planning and succession planning.
• Family governance (family charter, family council, family meetings).
• Administrative services (bill payment, property management, family security).
• Philanthropy management (charitable foundation or DAF administration).

Typical cost: the annual operating cost of a well-run SFO is 0.5–1% of assets under management. For a £50 million family, this is £250,000–500,000 per year. This is only cost-effective if the services provided — particularly investment management and tax savings — generate sufficient benefit to justify the operating cost.

The SFO threshold: most advisers suggest the SFO model becomes cost-effective at £50 million or above. Below this level, the fixed cost of the SFO (particularly employment costs for a CIO and tax/legal function) is disproportionate.

Multi-Family Office (MFO)

A multi-family office serves multiple family clients, sharing the cost of professional staff and infrastructure. MFO clients typically have £5–50 million in assets.

The MFO proposition: access to family office services (investment management, estate planning, tax coordination, philanthropy) at a lower cost than an SFO, through sharing infrastructure with 10–50 other families.

The trade-off: less customisation and privacy than an SFO. The MFO serves multiple clients; its advice and services are not wholly exclusive.

Selecting an MFO: key questions are: Is the MFO genuinely independent (no product sales, no platform rebates, no fund manager relationships that bias advice)? What is the investment track record? How is the wealth planning and tax coordination managed? Who are the other client families (peer network quality)?

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Estate Planning at UHNW Scale

A £30 million estate carries an IHT liability of approximately £11.7 million. At this level the Residence Nil Rate Band is wholly tapered away (it is lost entirely once a couple's estate exceeds £2.7 million), so only the combined nil rate band of £650,000 for a couple is available: (£30m − £650,000) × 40% ≈ £11.7 million. The standard HNW tools — making PETs, using the annual exemptions, topping up ISAs — are insufficient at this scale. A multi-instrument programme is required.

Instrument 1: Whole-of-Life Insurance in Trust

A whole-of-life policy, written in trust, pays a benefit on death directly to the trust beneficiaries (outside the estate). This benefit can be used to fund the IHT liability, allowing the estate to pass intact to the heirs without forced sales.

For a couple with a £10 million IHT liability, a joint whole-of-life policy on a second-death basis (paying on the death of the survivor) provides this. The premium is a function of the couple's ages and health; for a 60-year-old couple with a £10 million sum assured, premiums might be £200,000–400,000 per year. This is a significant cost — but the alternative is that £10 million of the estate is paid to HMRC.

Instrument 2: AIM Portfolio (Business Property Relief)

Shares listed on the Alternative Investment Market (AIM) that meet the Business Property Relief (BPR) criteria attract BPR after two years of ownership. From 6 April 2026, BPR on qualifying AIM and other unlisted shares was reduced from 100% to 50% — and AIM shares do not benefit from the £2.5 million 100% BPR allowance (which is reserved for unlisted trading company shares and qualifying agricultural property; that allowance was originally announced as £1 million in the October 2024 Budget but was raised to £2.5 million in December 2025). This means a £5 million qualifying AIM portfolio held for two years now receives 50% relief, removing £2.5 million from the taxable estate and leaving the remaining £2.5 million chargeable — an effective 20% IHT charge on the holding (40% on the unrelieved half), saving roughly £1 million in IHT rather than the £2 million that full exemption would once have produced.

The risk: AIM shares are volatile and illiquid. Some AIM companies lose BPR qualification if their business model changes. The reduction of AIM relief to 50% from April 2026 has materially weakened the IHT case for AIM portfolios. AIM portfolio construction for IHT purposes requires specialist management. The performance risk is real.

Instrument 3: Charitable Foundation

Assets transferred to a charitable foundation exit the estate entirely and forever. There is no IHT on assets donated to a qualifying charity. For a UHNW family with philanthropic objectives, establishing a family foundation and endowing it with £5–10 million removes those assets from the IHT estate while creating a lasting philanthropic legacy.

Instrument 4: Family Investment Company (FIC)

A family investment company is a bespoke private limited company, created to hold family wealth. The founder subscribes for loan notes (typically) and preference shares; the children hold ordinary shares (at low initial value). Future investment growth accrues in the ordinary shares — outside the founder's estate.

The advantage: the FIC allows the founder to maintain control of the company (through voting rights) while transferring economic value to the next generation. Corporation tax on investment returns (25% for large companies in 2026) is significantly lower than income tax at 45%. Retained profits within the FIC can be reinvested before extraction.

Complexity: FICs require a bespoke legal structure, constitutional documents, and ongoing administration. They interact with a wide range of tax provisions. Specialist legal and tax advice is essential.

Instrument 5: Discretionary Trust Programme

A coordinated programme of contributions to offshore or UK discretionary trusts, over multiple years, using carry-forward IHT gifts, can remove significant assets from the estate over time. The seven-year period eliminates PETs; a structured programme over 20 years can transfer tens of millions out of the estate.

The Coordinated Plan

At UHNW scale, no single instrument is sufficient. The plan must combine:

• Insurance (to fund the residual IHT on assets that cannot be removed from the estate in time).
• BPR assets (to shelve specific holdings from the estate immediately).
• Charitable giving (removing assets permanently).
• FIC and trust structures (transferring future growth).
• A phased gifting programme (removing current value gradually).

This requires a coordinated team: a private client solicitor, a tax adviser, an insurance adviser, and an investment manager. The family office — whether SFO or MFO — is the natural coordinator.

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The figures and thresholds in this guide are based on UK tax law as at 2026 and are subject to change. IHT rates, BPR qualifying criteria, and trust taxation rules have all changed in recent years and may change again. This guide is for general information only and does not constitute legal, tax, or investment advice. The strategies described require specialist professional advice. Investments can fall as well as rise; past performance is no guide to future returns.

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How Global Investments can help

Global Investments has experience advising ultra-high-net-worth families on the full range of investment, tax, and estate planning challenges described in this guide. We provide independent investment advice, coordinate access to private equity co-investments and specialist alternative managers, facilitate family office structures (including MFO services), and work alongside specialist legal and tax advisers to develop integrated estate plans. If you are at or approaching the UHNW threshold — or if you have not reviewed your estate plan in the context of your current wealth level — we would welcome a discussion.