Top 10 Angel Investment Networks in the UK for Startups in 2025

Discover the top 10 angel investment networks in the UK, their key sectors, and how they can support your startup’s growth.

Introduction to Angel Investment Networks

Angel investment networks, comprising seasoned Business angel investors, have become indispensable in the UK’s startup ecosystem. These networks provide not only vital capital but also invaluable expertise and mentorship to early-stage companies. Unlike traditional venture capital firms, Business angel investors often engage more personally with the startups they support, fostering long-term growth and innovation.

In this article, we delve into the Top 10 Angel Investment Networks in the UK for 2025, highlighting their unique strengths, sector focuses, and the ways they can accelerate your startup’s journey.

10. Kelvin Capital

Total Investment: £140m
Fundraisings: 131
Companies Invested In: 39

Based in Glasgow, Kelvin Capital is a prominent angel syndicate partnering with the Scottish Enterprise Co-Investment Fund. Their sector-agnostic approach has a strong emphasis on application software, supporting companies from seed to growth stages with an average stake of 21.7%. Recent investments include Sofant Technologies and ScotBio, showcasing their commitment to scalable ventures.

09. TRICAPITAL

Total Investment: £122m
Fundraisings: 140
Companies Invested In: 43

Founded in 2004, TRICAPITAL focuses primarily on Scottish businesses, investing between £250k and £2m per deal. With a notable presence in the pharmaceutical sector, their portfolio includes Carcinotech and Glen Clova Scientific. TRICAPITAL maintains robust partnerships with the Scottish Co-Investment Fund and Archangels, enhancing their investment impact.

08. 24Haymarket

Total Investment: £405m
Fundraisings: 162
Companies Invested In: 70

24Haymarket combines professional investment rigor with the agility of a private angel network. Headquartered in Westminster, they invest typically between £1m and £5m, often securing board seats to provide active support. Their focus on digital and application software has led to significant investments in multiple follow-on rounds, positioning them as key players in early-stage dealmaking.

07. Wealth Club

Total Investment: £409m
Fundraisings: 187
Companies Invested In: 77

Wealth Club, based in Bristol, is a leading force in direct-to-company angel investing. Catering to high-net-worth investors, they usually invest between £500k and £4m per deal. With a focus on high-growth ventures in application software and digital tech, Wealth Club boasts one of the highest average pre-money valuations, making them a sought-after partner for ambitious startups.

06. Envestors

Total Investment: £228m
Fundraisings: 189
Companies Invested In: 133

Southwark-based Envestors has a vast network of over 4,000 sophisticated investors. They offer flexible investment options ranging from £5k to £10m, primarily in application software and SaaS sectors. Notable exits include Chargemaster and SimplyCook, underscoring their ability to drive successful outcomes for portfolio companies.

05. Archangels

Total Investment: £253m
Fundraisings: 205
Companies Invested In: 38

As the oldest continuously-operating angel syndicate globally, Edinburgh’s Archangels invests in Scottish tech and life sciences companies from seed to growth stages. With investments ranging from £250k to £2m and an average stake of 24%, they bring decades of experience and a strong support network to their portfolio companies.

04. Minerva Business Angel Network

Total Investment: £64.9m
Fundraisings: 189
Companies Invested In: 115

Established in 1994 and managed by the University of Warwick Science Park, the Minerva Business Angel Network focuses on technology businesses, particularly in application software and pharmaceuticals. Their investments between £100k and £2m support high-growth ventures in biotech, diagnostics, and sustainability, often co-investing with significant financial institutions.

03. Equity Gap

Total Investment: £279m
Fundraisings: 222
Companies Invested In: 55

Edinburgh-based Equity Gap has funded 222 rounds since 2010, investing between £100k and £500k in seed and early venture-stage companies. Specializing in digital technologies and application software, they provide comprehensive post-investment support, including pitch coaching and exit planning, making them a pivotal part of Scotland’s innovation scene.

02. Oxfordshire Investment Opportunity Network (OION)

Total Investment: £168m
Fundraisings: 277
Companies Invested In: 204

Managed by Oxford Innovation Finance, OION invests across the UK with cheque sizes between £100k and £2m. Their focus spans application software, biotech, and clean technology, with recent investments in Oxford Space Systems and Argonaute RNA. OION’s active network of co-investors enhances their ability to support diverse and high-potential startups.

01. Cambridge Angels

Total Investment: £884m
Fundraisings: 298
Companies Invested In: 170

Leading the list, Cambridge Angels stands out with an impressive £884m invested across 298 fundraisings. Based in South Cambridgeshire, they focus on application software and digital technologies, typically investing between £150k and £1.5m per deal. With nearly three-quarters of members being exited entrepreneurs, Cambridge Angels offers both substantial capital and strategic guidance, driving the success of numerous high-potential UK startups.

The Future of Angel Networks in the UK

Angel investment networks are evolving into more than just capital providers; they are becoming strategic partners essential for nurturing the UK’s next generation of innovative businesses. Their hands-on approach, combined with sector expertise and strong community engagement, positions them as crucial players in the high-growth funding ecosystem. As the demand for early-stage investment continues to rise, these networks will undoubtedly play a vital role in shaping the future of UK startups.

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