How to Invest in Private Companies in the UK: A Beginner's Guide
Published 25th of April 2012·Updated 27 April 2026
Reviewed by: Reviewed for accuracy April 2026
Investing in private companies means putting money into businesses that are not listed on a public stock exchange. In the UK, this typically happens through angel investing, venture capital funds, crowdfunding platforms, or the Enterprise Investment Scheme (EIS). The potential returns can be high, but so is the risk: most early-stage businesses fail, and your money may not be accessible for many years.
Short Summary
Private company investment is high risk and illiquid. You could lose all of the money you invest, and you may not be able to sell your stake for years.
The UK government's Enterprise Investment Scheme (EIS) and Seed Enterprise Investment Scheme (SEIS) offer significant tax reliefs to investors in qualifying private companies, which can reduce your effective downside risk.
Crowdfunding platforms such as Seedrs and Crowdcube give retail investors access to early-stage businesses with relatively small minimum investments, typically from £10 to £50.
Before investing in any private company, seek independent financial advice. Private company investments are not covered by the Financial Services Compensation Scheme (FSCS).
What are the main ways to invest in private companies in the UK?
There are four main routes for UK investors:
| Method | Minimum investment | Liquidity | Tax relief available |
|---|---|---|---|
| Angel investing (direct) | £5,000 to £25,000+ | Very low | EIS or SEIS may apply |
| Equity crowdfunding (Seedrs, Crowdcube) | From £10 | Low (secondary markets exist) | EIS or SEIS may apply |
| Venture capital trusts (VCTs) | £5,000 to £10,000 | Moderate (listed shares) | 30% income tax relief |
| Private equity funds | £100,000+ | Very low | Varies |
Equity crowdfunding is the most accessible option for most retail investors. VCTs are a tax-efficient way to get diversified exposure to private companies without picking individual investments yourself.
What is the Enterprise Investment Scheme (EIS)?
The Enterprise Investment Scheme is a government programme that offers tax relief to UK investors who back qualifying early-stage companies. EIS investors receive:
- 30 per cent income tax relief on investments up to £1 million per tax year (or £2 million if at least £1 million is in knowledge-intensive companies)
- Capital Gains Tax exemption on profits if shares are held for at least three years
- Loss relief: if the company fails, you can offset the loss against income tax
For even earlier-stage companies, the Seed Enterprise Investment Scheme (SEIS) offers 50 per cent income tax relief on investments up to £200,000 per tax year. These schemes significantly reduce the financial impact of a total loss, but do not eliminate it. HMRC's guidance on EIS and SEIS is available at GOV.UK.
How do you find private companies to invest in?
Equity crowdfunding platforms. Seedrs and Crowdcube are the two largest UK platforms. They conduct basic due diligence on companies before listing them, and provide standardised information including business plans, financials, and valuation rationale. Each investment is typically in ordinary or preference shares in the company.
Angel networks. Organisations such as the UK Business Angels Association (UKBAA) and regional networks such as Angel Investors Network connect individual investors with early-stage businesses seeking funding. Many operate through pitch events where founders present to a room of potential investors.
Approaching companies directly. If you are interested in a specific private business, you can contact the owner directly to explore whether they are seeking investment. This is more common in established SMEs than in start-ups. You would need a solicitor to structure any deal correctly.
Venture capital trusts. VCTs are investment companies listed on the London Stock Exchange that invest in portfolios of private companies. Providers include Octopus Investments, Gresham House, and Mobeus. They are more diversified than backing individual companies and carry a 30 per cent income tax relief for new share subscriptions.
How do you assess a private company before investing?
Due diligence for private companies requires more effort than buying listed shares, because there is less publicly available information. Key steps include:
Review the business plan. Check whether the financial projections are realistic. Ask what assumptions underpin the revenue forecasts. Ask what the plan is if those assumptions prove wrong.
Understand the valuation. Private company valuations are often ambitious. Ask how the valuation was derived and how it compares to listed companies in the same sector at similar revenue stages.
Assess the founding team. Most early-stage failures are people problems, not product problems. Look for founders who have relevant experience, can demonstrate resilience, and are honest about risks.
Check the shareholder agreement. Understand what rights your shares carry. Preference shares give you priority in a winding-up scenario over ordinary shareholders. Check anti-dilution provisions, drag-along rights, and tag-along rights before signing anything. A commercial solicitor should review any investment documents before you commit.
What are the main risks of investing in private companies?
Total loss. Many early-stage businesses fail. The British Business Bank estimates that a significant proportion of start-ups do not survive beyond five years. You should only invest money you can afford to lose entirely.
Illiquidity. Private company shares cannot usually be sold on a public market. Secondary markets exist on platforms like Seedrs, but are limited and may not always find a buyer. Your money may be locked up for five to ten years or more.
Dilution. If the company raises further funding rounds after you invest, your percentage ownership may be reduced unless you have anti-dilution protections in your shareholder agreement.
Information asymmetry. Founders know more about their business than investors. Without thorough due diligence, it is difficult to identify misleading claims or material risks.
Frequently Asked Questions
Is investing in private companies regulated in the UK?
Equity crowdfunding platforms must be authorised and regulated by the Financial Conduct Authority (FCA). Direct angel investments are not regulated in the same way. Retail investors using crowdfunding platforms are protected by some FCA rules, but private company investments are not covered by the Financial Services Compensation Scheme (FSCS), so your capital is not protected if the platform or company fails.
What is the minimum amount I need to invest in a private company?
Through crowdfunding platforms such as Seedrs and Crowdcube, minimum investments can be as low as £10 to £50. Direct angel investments typically start at £5,000 to £25,000. VCTs generally have a minimum subscription of around £5,000 to £10,000.
Can I invest in private companies through a pension or ISA?
VCTs can be held outside an ISA but benefit from their own tax reliefs. EIS and SEIS investments cannot be held inside an ISA or SIPP. Some SIPP providers allow alternative assets, but private company shares are rarely included. Consult a financial adviser before attempting to invest via a pension wrapper.
How long before I see a return on a private company investment?
Timelines vary significantly. Early-stage company investments often take five to ten years to reach a liquidity event such as a trade sale or stock market listing. Many investments never reach a liquidity event. EIS rules require you to hold shares for at least three years to retain tax reliefs.
What tax relief is available on private company investments?
EIS offers 30 per cent income tax relief; SEIS offers 50 per cent income tax relief. Both also offer CGT exemption on gains and loss relief if the company fails. VCTs offer 30 per cent income tax relief on new share subscriptions. HMRC's detailed guidance is on GOV.UK. A tax adviser can help you optimise your position.
Should I take financial advice before investing in private companies? Yes. Private company investment is complex, high risk, and illiquid. An independent financial adviser (IFA) authorised by the FCA can assess whether this type of investment is suitable for your overall financial situation. You can find regulated advisers through Unbiased.co.uk or VouchedFor.co.uk.