24 Haymarket

Not financial or fundraising advice. See full disclaimer.

Tickets

£2M - £10M

Rounds

Seed
Pre-Series A
Series A

Sectors

Health
Cyber Security
Supply Chain
Climate / Green
Professional Services
Consumer
Future of Work

Target Geography

United Kingdom

Last Edited:

October 2, 2025

To suggest a correction to the database, or request to be added or removed from it, contact us at info@adeline.co.uk.

Founded in 2012, 24Haymarket has quickly become a distinctive player in the UK's early-stage investment landscape. Headquartered in London, with a second office in Edinburgh, 24Haymarket operates a private investor network made up of over 100 experienced professionals, including former entrepreneurs, executives, and investors. Their unique structure means founders don't just gain capital—they tap into a collective 3,000+ years of combined industry expertise.

What sets 24Haymarket apart is their approach to investing. Unlike funds that back early ideas still in their infancy, they focus on startups that have already demonstrated clear commercial traction—typically investing in companies hitting around £1 million or more in annual revenues. Founders approaching 24Haymarket should be prepared to clearly show product-market fit, as the firm prioritises commercial acceleration over pure technology development risk.

The firm's portfolio is diverse, ranging from digital health and cybersecurity to clean tech and the future of work. Notable successes include Cambridge CMOS Sensors (acquired by ams AG) and IntelligentPOS (acquired by iZettle, now part of PayPal). Current standout companies in their portfolio include Wattbike, proSapient, and Dogtooth Technologies, reflecting their broad sectoral interests and track record of picking ventures poised for growth.

24Haymarket typically writes cheques between £1 million and £5 million, taking significant minority stakes—usually around 15-20%—and often leading funding rounds. They actively support follow-on investments, indicating a long-term partnership mindset. Their decision-making process is notably quick, with a target turnaround of around six weeks from first pitch to closing—a refreshing pace in the investment community.

But capital isn't their only asset. Founders who have partnered with 24Haymarket highlight their active, supportive engagement without micromanagement. The firm routinely places seasoned investor-directors on company boards, offering targeted support in areas like talent recruitment, sales growth strategies, business development, and future fundraising. According to founders like those at proSapient, working with 24Haymarket is "collegiate and supportive," while Wattbike’s leadership has praised 24Haymarket’s strategic support and operational guidance as significant contributors to the company's growth.

24Haymarket represents a blend of financial support, strategic guidance, and practical resources—that could be a fit for founders ready to scale commercially proven ideas.

Working on the next big thing?

Adeline Arts & Science is a London-based angel investor funding pre-seed and seed-stage startups.


£2M - £10M
Seed
Pre-Series A
Series A
Health
Cyber Security
Supply Chain
Climate / Green
Professional Services
Consumer
Future of Work
United Kingdom

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