11925215 · Active · incorporated 7 years, 6 months ago · Tunbridge Wells
Energy CleanTech Deep Tech Energy Series B+
HiiROC develops proprietary plasma technology for producing affordable, clean hydrogen through Thermal Plasma Electrolysis.
Hiiroc Limited is a private limited company registered at Companies House under number 11925215, incorporated on 4 April 2019, with a registered office in Tunbridge Wells. Its current status on the register is active. Its filed nature of business is other business support service activities n.e.c. (SIC 82990). Sonde has indexed 134 filings for this company, including 5 funding rounds. Its most recent round closed in September 2026, raising £12.7m.
| Round | Closed | Raised | Price per share |
|---|---|---|---|
| Round 5 | Sep 2026 | £12.7m | £1.00 |
| Round 4 | Feb 2026 | £10.1m | £1.00 |
| Round 3 | May 2024 | £4.7m | £29.44 |
| Round 2 | Dec 2021 | £26.7m | £12.67 |
| Round 1 | Oct 2020 | £1.6m | £110.50 |
Showing the 11 most recent of 134 filings.
See the complete cap table with every shareholder, founder tags, dilution across 46 share allotments, round-by-round fundraising history, and the full filing timeline — parsed from official Companies House documents.
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