Astral Systems 🇬🇧
Bristol, UK biotech/health-tech company. Mercia Ventures led the Series A and Speedinvest took part.
About Astral Systems
The company offers a Multi-State Fusion (MSF) reactor designed for efficient neutron production, featuring models that provide significantly higher output and longer operational lifetimes compared to existing alternatives. This technology utilizes advanced fusion principles to support applications in medical isotope production and nuclear power, among other uses.
Astral Systems is a UK-based company founded in 2021, now around 41 people. It has raised $30.7M in disclosed funding. FundFinder classes it as Health & Bio.
Founder: Talmon Firestone (Chief Executive Officer; repeat founder; previously Aoi Consulting Inc, ConsortiumNeutron Systems; International Space University).
Its investors also appear on FundFinder's most-active lists for Series A · Fintech (84 funds), Series A · Generalist (64 funds), Series A · AI (62 funds).
Company facts from Harmonic and public filings; team backgrounds from public profiles. Refreshed weekly.
Series A · €26M · Jun 2026
Speedinvest- Speedinvest — Speedinvest is a Vienna-based European venture capital firm that invests in tech startups from pre-seed and seed through to later-stage rounds. · cheques £200k – £3M