TUNNELBUILDER LTD
Company number 04601142 · Active · Newport NP20 4SF
TUNNELBUILDER LTD is an active private limited company (company number 04601142) incorporated on 26 November 2002, registered in Newport. Its registered activity is other software publishing (SIC 58290). Latest small accounts cover the period ending 31 March 2025, showing net assets of −£12k and cash of £178, with 0 employees on average. Net assets fell 1366% on the prior period (−£800).
By net assets it sits in the bottom quarter of 104 comparable companies in Cardiff (median £289, upper quartile £5,463).
Key dates
- Incorporated
- 26 November 2002
- Next accounts due
- 31 December 2026 — in 73 days
- Confirmation statement due
- 10 December 2026 — in 52 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
Activity
- SIC 58290
- Other software publishing
- SIC 62090
- Other information technology service activities
- Accounts type
- Total Exemption Full
- Size band
- Micro (Companies Act thresholds)
Financials — 2 periods on record, latest ending 31 March 2025
| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2025 | −£12k | £178 | £28k | £25k | — | — | 0 |
| 31 March 2024 | −£800 | £1,028 | £45k | £30k | — | — | 2 |
- Current ratio
- 1.11
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.
Firmoscan score: 35/100 (grade D)
- -15 Negative net assets — Net assets £-11,727 at 2025-03-31
- -8 Net assets falling — -1365.9% vs prior period
- +8 Established — Incorporated 2002-11-26 (24 years)
A transparent, rules-based score from filed data only: every point lists its evidence. It is not a credit rating or advice.
Ownership and control
- Ms Samantha Jane Heard — owns 75–100% of shares; holds 75–100% of voting rights · since 11 November 2016
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents.
Similar companies in Cardiff
Same activity (other software publishing), closest in incorporation date.
- NUMERICAL CONTROL COMPUTER SCIENCES LIMITED — Porthcawl, inc. Jun 2003
- ROCKET SALAD LIMITED — Cardiff, inc. Jan 2001
- IC LANGUAGE LIMITED — , inc. Jan 2005
- D.I.Y. DOCTOR LIMITED — Hengoed, inc. Jun 2006
- GADGETMEDIA LIMITED — Cardiff, inc. Aug 2006
- CWMNI AMRYLIW CYF — Mid Glamorgan, inc. Jul 1996
Reminders for TUNNELBUILDER LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.