UK cap tables carry more family money than most coverage lets on. The capital is discreet, but the routes it takes are not: a family office reaches UK startups in four main ways, and the choice between them decides the fees, the control and the workload that follow.
This page is the map. It sets out the routes in, how the allocation is usually framed, what exposure looks like at each level, and who does the work. The deeper questions (the direct-versus-funds split, SEIS and EIS eligibility, club-deal mechanics) each get their own page, linked where they come up.
The Carry's reading of the UBS Global Family Office Report series is straightforward: with alternatives running at roughly 42% of the average family-office portfolio, the startup question is rarely whether, it is which door.
Four routes in, one question underneath: who does the work?
What are the main routes a family office uses to reach UK startups?
Four routes account for most family-office activity in UK startups: buying shares directly in a company, committing to a venture fund as a limited partner, co-investing alongside an angel or VC lead, and taking a pooled position through a feeder or special purpose vehicle (SPV).
Direct deals put the office on the cap table in its own name or a nominee's, holding ordinary shares it sourced, priced and negotiated itself. Control is highest here, and so is the workload. Fund commitments hand both to a manager: the office picks the fund, the fund picks the companies, and capital is drawn down over several years. Co-investment sits between the two: another investor leads, sets the price and does the heavy diligence, and the office joins deal by deal. How those club deals work from both sides of the table is covered in how family offices co-invest with angels and VCs.
Feeders and SPVs pool several backers into one entity that holds the shares, which is how much of the UK's syndicated angel market is built. The mechanics of pooled angel deals and the leads who run them have their own page.
How much of a family office portfolio goes to venture and startups?
Startups sit inside the alternatives allocation, which the UBS Global Family Office Report 2026 puts at roughly 42% of the average family-office portfolio; Campden Wealth puts private markets at about 29% in its 2025 reporting. The UBS survey covered 307 family offices with average assets of around $1.3bn, so these are figures from the institutional end of the market.
Neither number is a startup number. Alternatives take in private equity, real estate, hedge funds and infrastructure as well as venture, so early-stage exposure is a minority share of a minority bucket, sized so a string of zeros cannot dent the family balance sheet.
The balance inside private markets has been shifting too. UBS's 2026 report finds the split between direct deals and fund positions has moved to rough parity, where 2021 skewed clearly towards direct (around 13% of the average portfolio in direct holdings against 8% in funds). What drives that choice, and where each route concentrates risk, is the subject of direct versus funds for family offices.
What does UK startup exposure look like at each level?
At the direct level, UK startup exposure means ordinary shares in private companies; at the fund level, a limited partnership stake in a manager's portfolio; in between, deal-by-deal positions behind a lead, held directly or through an SPV. The table above sets the four routes side by side on control, effort, diversification and vehicle.
The UK adds a tax layer that shapes how families hold early-stage stakes. SEIS and EIS income tax relief (50% on up to £200,000 a year under SEIS, 30% on up to £1m under EIS, per GOV.UK) is available to individual investors, not to companies or trusts. An office investing through an entity cannot claim it; family members subscribing personally can. The full eligibility picture, nominees included, is set out in can a family office claim SEIS or EIS tax relief.
Co-investments and club deals, meanwhile, have become the dominant structure for family-office direct activity, per Campden Wealth and wider industry reporting: the office rents sourcing and pricing from a lead it trusts and keeps the decision deal by deal. For the angel's side of the same holding question, direct versus SPV from the investor's seat walks through who owns the shares and what that changes.
Who does the work: an in-house team, an adviser or a multi-family office?
It depends on scale and appetite: single family offices with investment teams keep the work in-house, while smaller offices buy sourcing, diligence and monitoring in through funds, advisers or trusted leads. A single family office (SFO) runs money for one family; a multi-family office (MFO) runs money and administration for several at once, usually with more process and less appetite for one-off deals.
An in-house direct programme needs real machinery: deal flow that arrives on merit, diligence hours, monitoring and a reserves policy for follow-on rounds, because early-stage positions usually ask for more capital later. Without that machinery, direct investing quietly turns into deal flow from whoever got the family's email address, a sourcing strategy nobody would choose on purpose.
Buying the work in swaps fees for coverage. The manager, adviser or MFO charges for selection and administration, and the honest question is not whether the fees are annoying (they are) but whether the family could replicate the coverage for less.
How should a family office weigh the choice of route?
As a set of trade-offs, not a ranking. The factors that actually move the decision:
- Control against effort. Direct deals maximise both. If the family wants influence over terms, someone has to earn it with sourcing and diligence hours.
- Diversification maths. Early-stage returns concentrate in a few winners, so a thin portfolio carries outsize risk whichever route builds it.
- The fee stack. Funds charge management fees and carry; SPVs and advisers add their own layers. Comparisons only mean something after every layer is counted.
- The family's tax position. SEIS and EIS relief attaches to individuals, so who holds the shares changes the after-tax outcome. That is personal-circumstances territory, and regulated-advice territory with it.
- Horizon and liquidity. Nothing here is liquid, and fund commitments lock capital up for many years. Money with a nearer job belongs elsewhere.
Whether a family office needs FCA authorisation for any of this activity is a separate question with its own rules, beyond this page. And none of the above is a steer: this is general information, not financial or tax advice. The current scheme rules are on GOV.UK, and decisions about routes, structures and reliefs belong with an FCA-regulated adviser, and a tax adviser, who can see the family's whole position.
Frequently asked questions
How do family offices invest in UK startups?
Through four main routes: direct investments onto a company's cap table, commitments to venture capital funds as a limited partner, co-investments alongside an angel or VC lead, and pooled positions through feeder funds or special purpose vehicles. Larger offices with in-house teams lean towards direct deals and co-investments; smaller offices tend to use funds, advisers or multi-family offices.
How much do family offices allocate to venture and startups?
The UBS Global Family Office Report 2026, based on 307 family offices with average assets of about $1.3bn, puts alternatives at roughly 42% of the average portfolio, and Campden Wealth's research puts private markets at around 29%. Early-stage venture is a minority share within those buckets, sized so failures cannot damage the family balance sheet.
Do family offices invest in startups directly or through funds?
Both, in roughly even measure. UBS's 2026 report finds the direct-versus-fund balance inside private markets has moved to rough parity, after several years in which direct deals held the larger share. The choice turns on control, fees, team capacity and how much diversification the family wants per pound invested.
Can a family office claim SEIS or EIS tax relief?
Not as an entity. SEIS and EIS income tax relief is available to individual investors only, per GOV.UK and HMRC's Venture Capital Schemes Manual, so a company or standard trust structure cannot claim it. Family members subscribing personally can, and an individual subscribing through a nominee is treated as the subscriber. This is general information, not tax or financial advice: confirm the rules on GOV.UK and take FCA-regulated advice.
Do family offices co-invest with angel syndicates?
Yes. Co-investments and club deals have become the dominant structure for family-office direct activity, according to Campden Wealth and industry reporting. The office typically brings patient capital and cheque flexibility, while the syndicate lead brings deal flow, diligence and pricing. Each side checks the other's incentives, fees and follow-on intentions before sharing a cap table.