Artificial intelligence continues to dominate investment activity, but the story of 2026 is broader than AI alone. Deep tech, life sciences, defence technology, energy infrastructure, and autonomous systems have all attracted substantial investor interest. At the same time, capital has become increasingly concentrated around businesses capable of demonstrating clear commercial traction, strong management teams, and realistic paths to scale.
For founders, this combination of available capital and heightened selectivity is shaping both fundraising strategy and deal structure. Investors continue to support ambitious growth businesses, but place increased emphasis on governance, valuation discipline, and downside protection.
Market overview
Investor behaviour has changed noticeably over the last eighteen months. UK start-ups and scale-ups raised US$17 billion in H1 2026, up 102% from approximately US$8.4 billion in H1 2025. However, capital deployment has become increasingly concentrated around a relatively small number of businesses operating in sectors perceived to offer the strongest long-term growth potential. The H1 figures, therefore, demonstrate both the availability and the concentration of capital.
At the same time, the UK's long-standing scale-up funding challenge remains. The UK continues to generate high-quality early-stage businesses, but industry bodies continue to call for greater domestic institutional participation so that more of the long-term value created by the UK's innovation ecosystem can be retained domestically.
AI continues to dominate
Artificial intelligence remains the standout venture capital story of H1 2026. According to market reports, AI accounted for approximately 32% of all venture investment in the UK, with investment activity spanning infrastructure, autonomous systems, life sciences, energy management, and industry-specific applications.
The largest funding rounds continue to demonstrate the scale of investor conviction. Nscale's US$2 billion raise, Wayve's US$1.5 billion (c. £1.1bn) funding round reported in Q1 2026, and a series of major global AI transactions underline the extent to which investors continue to prioritise AI-focused businesses.
Beyond AI, deep tech continues to attract significant investment. The UK benefits from a strong research base, an established spinout ecosystem, and globally recognised universities, particularly in Cambridge, Oxford, and other established innovation hubs, making it an attractive environment for investors seeking defensible intellectual property and long-term growth potential. In H1 2026, the UK attracted 41% of European deep tech and life sciences funding.
Defence technology, autonomous systems, advanced manufacturing, and critical infrastructure remain strategically important areas for European investors. Geopolitical tensions and growing concerns around national security have increased investor appetite. More than $35 billion has been invested in defence startups by venture capital firms so far in 2026, compared to $25 billion across the whole of 2025. Across Europe, investors have shown a greater willingness to back businesses serving defence technology, a trend that appears likely to continue into H2 2026.
Deal term trends
Investor selectivity remains a defining feature of the market. Businesses viewed as clear market leaders continue to attract significant capital at increasingly ambitious valuations, but the concentration of H1 investment in AI and late-stage rounds suggests that this availability is not uniform across the market.
This concentration of capital is also influencing deal negotiations. Investors are placing continued emphasis on governance, reporting obligations, and downside protection. Investor protections remain an important feature of venture financings, reflecting a continued emphasis on risk management and long-term value preservation.
Venture debt has also become an increasingly common component of growth-stage funding strategies in H1 2026. As founders seek to manage dilution and extend runway, debt solutions are increasingly being used alongside equity financing. A growing number of lenders are competing for high-quality opportunities, resulting in greater flexibility in some financing structures, whilst preserving core lender protections.
UK outlook and practical opportunities
The outlook for the UK venture capital market remains broadly positive. The UK's research base, entrepreneurial ecosystem, and strength in AI, deep tech and life sciences continue to attract both domestic and international capital.
Recent reforms aimed at increasing the supply of UK growth capital may help address the long-standing scale-up funding gap. Measures including expanded Enterprise Investment Scheme (EIS) and Venture Capital Trust (VCT) investment limits, additional support through the British Business Bank, and initiatives designed to encourage greater institutional investment into private markets are intended to increase the availability of capital for businesses seeking to scale. For overseas investors and fund managers, the reforms may increase the pool of UK growth companies capable of receiving EIS or VCT backed capital.
For founders, the message is clear from H1 2026: capital remains available, but investors are increasingly selective and expect strong fundamentals, effective governance, and a credible growth strategy. For investors, the market continues to present significant opportunities, particularly in AI, deep tech and strategically important sectors.
The UK's challenge is no longer producing innovative venture-backed businesses. The challenge is ensuring that sufficient capital is available to help those businesses scale. If that challenge can be addressed, the UK will remain well positioned to strengthen its status as a global venture capital leader.
With 35 offices worldwide, DWF is an international firm and is home to the UK’s largest venture and growth capital group, comprising more than 85 lawyers dedicated to this practice. If you have queries on any of the issues covered in this article please contact one of our experts.
