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24Haymarket

Syndicate

Est. 2011. 100+ seasoned investors, 3000+ yrs exp. Led Paul Tselentis (ex-Carlyle, CCMP, Lehman). Co-founders: Simon Leefe (Candover), Lindsay Stuart (JPMorgan/Cinven), Marek Gumienny. 86 investments, 72-77 portfolio co., 12 exits incl. Cambridge CMOS (ams 2016), IntelligentPOS (PayPal 2016), Wattbike (2025), Osprey (2025), Sphere Fluidics (2025). Portfolio: Dogtooth, proSapient, myGwork, Calira, Privitar, BlackBullion. Team 13. 6-week decision.

Check Size
£1M - £5M

Investment Thesis

London angel syndicate: £1-5m (£1.5m sweet spot) into revenue-gen. B2B firms (£1m+ revenue) w/ PMF. Core: SaaS, healthtech, cybersec, fintech, supply chain, deeptech hardware. 100+ ex-PE operators (Carlyle, CCMP, JPMorgan, Candover). Board-active. Avoids pre-revenue/early R&D. Multi-round follow-on. 23% avg stake, £9.5m pre-money.

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