24Haymarket is a syndicate and venture capital firm. Based in London, England, United Kingdom. Among the 12 companies in the known portfolio are Dragonfly AI, Optalitix, Previsico, Kelda Showers, Angoka and WATR.
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Investment focus
Contacts
Who to pitch at 24Haymarket
24Haymarket portfolio companies (12)
- Dragonfly AI
- Optalitix
- Previsico
- Kelda Showers
- Angoka
- WATR
- BirdsEyeView
- CyberOwl
- onHand
- DrDoctor
- Huq Industries
- myGwork
Co-investors
Funds that share portfolio companies with 24Haymarket.
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About 24Haymarket
The firm's listing covers sectors AI, Climate, Hardware and Healthcare, and focus areas Analytics, Cybersecurity, Data and Digital Health; known deals cluster at Seed, Series A and Series B.
The team counts 9 people in our database. Paul Tselentis (Co-Founder and CEO) and Jamie Waller (Principal) are shown as the contacts to pitch.
Across the known portfolio, 18 co-investors appear alongside 24Haymarket, including Foresight Group, Calculus Capital and White Horse Capital.
Frequently asked questions
What is 24Haymarket?
24Haymarket is a syndicate and venture capital firm based in London, England, United Kingdom, with a known portfolio of 12 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does 24Haymarket invest in?
Listed sectors include AI, Climate, Hardware and Healthcare; listed focus areas include Analytics, Cybersecurity, Data and Digital Health. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does 24Haymarket invest at?
The known deals of 24Haymarket include Seed, Series A and Series B rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at 24Haymarket?
2 of the 9 people on file at 24Haymarket are listed as contacts for the firm. All 9 have their own profile page.
How do I contact 24Haymarket?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The 9 people attached to the firm have their own pages, each showing whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal