−£42k
vs Jun 2024Active12032561Private limited companyCarmarthen
PROTONIUM LTD
Significant control: Josue Vivas Hernandez (75–100%)
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
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What does Protonium Ltd sell?
Registered activity: Manufacture of other special-purpose machinery n.e.c. (SIC 28990). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
PROTONIUM LTD is an active private limited company (company number 12032561) incorporated on 4 June 2019, registered in Carmarthen. Its registered activity is manufacture of other special-purpose machinery n.e.c. (SIC 28990). Latest micro accounts cover the period ending 30 June 2025, showing net assets of −£42k, with 1 employee on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets fell 12% on the prior period (−£37k).
Peer position · net assets
By net assets it sits in the bottom quarter of 2,042 comparable companies in the UK (median £38k, upper quartile £405k).
02
Ownership and control
- Mr. Josue Vivas Hernandez
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.
03
Key dates
- Incorporated
- 4 June 20197 yrs ago
- Next accounts due
- 30 March 2027in 158 days
- Confirmation statement due
- 18 June 2027in 238 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 28990
- Manufacture of other special-purpose machinery n.e.c.
- SIC 58290
- Other software publishing
- SIC 63120
- Web portals
- SIC 71122
- Engineering related scientific and technical consulting activities
- Accounts type
- Micro Entity
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not disclosed
1
No changevs Jun 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 June 2025 | −£42k | — | — | £44k | — | — | 1 |
| 30 June 2024 | −£37k | — | — | £38k | — | — | 1 |
Current ratio0.02Current assets ÷ creditors within one year
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing; micro-entity accounts contain no profit and loss account.
06
Filing and accounts signals
- Net assets below zeroNet assets £-41,763 at 30 June 2025
- Current assets below creditors within one yearCurrent ratio 0.02
- Incorporated five or more years agoIncorporated 4 June 2019
Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.
07
Timeline
- Confirmation statement duein 238 days
- Next accounts duein 158 days
- Accounts period endNet liabilities £42k · micro accounts
- Accounts period endNet liabilities £37k · micro accounts
- Incorporated
08
Similar companies in Swansea
- EBS GLOBAL LIMITEDLlanelli · inc. Dec 2020
- VALLEY ENTERPRISES LTDCarmarthen · inc. Feb 2021
- MACDUFF ROBOTICS LTDCarmarthen · inc. Jan 2022
- STERAFILL LIMITEDCarmarthen · inc. Apr 2016
- TRITON CLEANTECH LTDSwansea · inc. Apr 2016
- GAIA GROUP CONSULTANTS LIMITEDLlanelli · inc. Apr 2016
All companies incorporated on 4 June 2019 · in Jun 2019.
09
Reminders for PROTONIUM LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.