Jonathan Day is an Investment Director at The FSE Group, whose known portfolio counts 18 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Investment Director at The FSE Group, whose known portfolio counts 18 companies
- Semarion
- RazorSecure
- STAXY Ltd
- Ace High Sports
- Jet Engineering System Solutions
- Sovereign Dual Use 5G Solutions
- Utonomy
- Bakedin
- Bosena
- Ecoanolytes
- Hofmeister
- JustHire
- and 6 more
Investor Profile
Founders in the listed sectors AI, Consumer, Hardware and Healthcare, and focus areas Biotech, Data Analytics, Diagnostics and IoT fall inside that listing.
The FSE Group appears in Pre-Seed, Seed and Series A rounds across its known deals.
What the affiliated firm has backed is the closest available signal on whether Jonathan Day is worth approaching.
Colleagues at The FSE Group
Julie Silvester
Chief Executive Officer
London, United Kingdom
Martin Rigby
Chaiman, FSE Group & FSE Fund Managers
Cambridge, United Kingdom
Marco Cerrone
Senior Investment Manager - Venture & Growth Finance
London, United Kingdom
Subhendu Pal
Venture Capital Investor
London, United Kingdom
Anna Staevska
Investment Manager
Newquay, United Kingdom
Trevor Jones
Angel Investor Network Manager
London, United Kingdom
Frequently asked questions
Who is Jonathan Day?
Jonathan Day is a venture capital investor and venture debt investor based in Winchester, England, United Kingdom, listed as Investment Director at The FSE Group. The known portfolio of that firm counts 18 companies. That portfolio belongs to the firm, not to Jonathan Day personally.
What does Jonathan Day invest in?
Listed sectors include AI, Consumer, Hardware and Healthcare; listed focus areas include Biotech, Data Analytics, Diagnostics and IoT. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Jonathan Day invest at?
The FSE Group appears in Pre-Seed, Seed and Series A rounds across its known deals, and Jonathan Day is listed there as Investment Director. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Jonathan Day listed at?
Jonathan Day is listed as Investment Director at The FSE Group. 6 other people in the database share a firm with Jonathan Day.
How do I contact Jonathan Day?
An email address, a phone number and a LinkedIn page are on file for Jonathan Day. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal