Guinness Ventures focuses on investing in early-stage and scale-up UK companies, particularly within the Business Services (including B2B software), Consumer, and Healthcare (including digital health technologies) sectors. Their strategy involves backing ambitious founding teams with initial traction, providing capital and strategic support to help them achieve growth and build diversified portfolios through tax-efficient schemes like SEIS, EIS, and VCT.
Deal activity increased 400% year-over-year (5 deals in the last 12 months). Their most common stage is series-a (64% of deals). Average disclosed round size is $75.9M (across 9 rounds with reported amounts).
Portfolio
11
Fund Size
—
Top Stage
Series A
Last 12 Mo
5
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
11 investments
| Company | Round | Amount | Date |
|---|---|---|---|
| DDragonfly AI | Series A | $5.7M | Jan 2026 |
 GlycanAge | Series A | $8.7M | Dec 2025 |
 YASO | Series A | $9.4M | Sep 2025 |
 Goodrays | Series A | $5.7M | Jul 2025 |
 Perci Health | Seed | $4M | Jun 2025 |
 Qureight | Series A | $8M | Apr 2024 |
| OOBRIZUM | Series A | $11.5M | Nov 2022 |
 Cera Care | Growth | $310M | Aug 2022 |
 Cera | Growth | $320M | Aug 2022 |
| PPopsa | Unknown | — | — |
 Forestreet | Series A | — | — |
Top Co-Investors
Jane Street Capital2 shared
Schroders Capital2 shared
Yabeo2 shared
Squarepoint Capital2 shared
Oltre Impact2 shared
8090 Partners2 shared
Playfair Capital2 shared
Gresham House1 shared
BrightCap Ventures1 shared
Kadmos Capital1 shared
Foresight Ventures1 shared
Founders Fund1 shared
Puma Growth Partners1 shared
Koro1 shared
Sequel1 shared
Portfolio Ventures1 shared
Octopus Ventures1 shared
Macmillan Cancer Support1 shared
Last updated: 13 March 2026