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24 Haymarket
Impact for scaleups
47
UK companies backed
38%
follow on investments
45%
Investments outside London
35
Growth stage investments
Key sectors
24 Haymarket is a private investment firm specialising in growth equity and venture capital, headquartered in London, with a strategic focus on supporting high-growth companies in the UK. Since its inception, the firm has established a strong network of over 100 seasoned private investors, allowing it to leverage collective expertise across various sectors, particularly technology, healthcare, and cybersecurity.
The firm adopts a hands-on approach, often taking board seats in its portfolio companies to ensure strategic alignment and support growth initiatives. This involvement not only facilitates access to capital but also fosters a comprehensive growth environment that includes talent recruitment, market expansion strategies, and exit planning.
In the period between 2018 to June 2025, 24 Haymarket participated in 76 fundraising rounds in 47 UK companies. The average turnover of those companies was £7.96m and their average number of employees was 36.
24 Haymarket primarily focuses on equity investments in UK-based businesses at the venture and growth stages. It targets companies that have demonstrated initial commercial traction, ensuring that investments are made in firms poised for significant growth. The firm typically invests between £1 million and £5 million per company and aims to secure an average equity stake of 18%. This strategy reflects 24 Haymarket’s commitment to nurturing high-potential investments while allowing for co-investment opportunities without imposing a matched funding requirement.
Recent Investment by 24Haymarket from 2024 include scaleup onHand, a firm that develops an online care service wherein 24 Haymarket invested £250k along with Insignia Technologies, a food label firm, wherein they participated in a £282k funding round.
Scaleups in 24Haymarket’s portfolio include Optalitix a firm that develops machine learning technology and DrDoctor, a firm that develops an online health platform,.
24Haymarket, has maintained an active pace in 2025 with notable investments and portfolio exits across its core UK verticals. Key activity includes leading a growth capital investment in August 2025 for environmental monitoring technology company WATR to accelerate its global expansion, particularly for its real-time water and soil quality data platform. The firm also participated in a £1.7 million funding round for AI start-up Growth Intelligence. On the exit front, 24Haymarket realized liquidity from its portfolio, including the merger/acquisition of Sphere Fluidics in September 2025 and the exit of Wattbike in April 2025. The firm continues to target early-stage investments of between £1 million and £5 million in areas such as Digital Healthcare, Cyber Security, Climate Technology, and Future of Work.
