COMPLEX SYSTEMS ENGINEERING LTD
Company number 04863255 · Active · Reigate RH2 7QT
COMPLEX SYSTEMS ENGINEERING LTD is an active private limited company (company number 04863255) incorporated on 12 August 2003, registered in Reigate. Its registered activity is other research and experimental development on natural sciences and engineering (SIC 72190). Latest micro accounts cover the period ending 31 August 2025, showing net assets of £2, with 1 employee on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public.
By net assets it sits in the lower half of 90 comparable companies in Surrey (median £4,450, upper quartile £65k).
Key dates
- Incorporated
- 12 August 2003
- Next accounts due
- 31 May 2027 — in 227 days
- Confirmation statement due
- 26 August 2027 — in 314 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
Activity
- SIC 72190
- Other research and experimental development on natural sciences and engineering
- SIC 74909
- Other professional, scientific and technical activities n.e.c.
- Accounts type
- Micro Entity
- Size band
- Micro (Companies Act thresholds)
Financials — 2 periods on record, latest ending 31 August 2025
| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 August 2025 | £2 | — | — | £2 | — | — | 1 |
| 31 August 2024 | £0 | — | — | £0 | — | — | — |
- Current ratio
- 1
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.
Firmoscan score: 68/100 (grade B)
- +10 Positive net assets — Net assets £2 at 2025-08-31
- +8 Established — Incorporated 2003-08-12 (23 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
- Dr David William Stupples — owns 25–50% of shares · since 10 June 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 Surrey
Same activity (other research and experimental development on natural sciences and engineering), closest in incorporation date.
- GAS DYNAMICS LTD. — Hampshire, inc. Jul 2003
- SPACE CONNEXIONS LIMITED — Guildford, inc. May 2003
- PHOENIX GEOSCIENCE LIMITED — Farnham, inc. Apr 2003
- ROYLAN DEVELOPMENTS LIMITED — Dorking, inc. Feb 2003
- J&P PHARMA UK LIMITED — Dorking, inc. Apr 2004
- CERES POWER HOLDINGS PLC — Horsham, inc. Jul 2004
Reminders for COMPLEX SYSTEMS ENGINEERING LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.