−£2,422
vs Oct 2024Active05606386Private limited companyCambridge
COMPLEX SYSTEMS RESEARCH LIMITED
E27/10001
Summary
COMPLEX SYSTEMS RESEARCH LIMITED is an active private limited company (company number 05606386) incorporated on 28 October 2005, registered in Cambridge. Its registered activity is other research and experimental development on natural sciences and engineering (SIC 72190). Latest small accounts cover the period ending 31 October 2025, showing net assets of −£2,422 and cash of £118, with 0 employees on average. Net assets fell 47% on the prior period (−£1,646).
Peer position · net assets
By net assets it sits in the bottom quarter of 193 comparable companies in Cambridge (median £6,914, upper quartile £134k).
02
Key dates
- Incorporated
- 28 October 200520 yrs ago
- Next accounts due
- 31 July 2027in 282 days
- Confirmation statement due
- 11 November 2026in 20 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
03
Activity
- SIC 72190
- Other research and experimental development on natural sciences and engineering
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
04
Financials
£118
+59%vs Oct 2024Not reported
0
vs Oct 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 October 2025 | −£2,422 | £118 | — | £2,540 | — | — | 0 |
| 31 October 2024 | −£1,646 | £74 | — | £1,720 | — | — | 0 |
Current ratio0.05Current liabilities exceed current assets
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.
05
Firmoscan score
27 / 100 · grade E
| 50 | Starting scoreEvery scored company starts here |
| −15 | Negative net assetsNet assets £-2,422 at 2025-10-31 |
| −8 | Net assets falling-47.1% vs prior period |
| −8 | Current liabilities exceed current assetsCurrent ratio 0.05 |
| +8 | EstablishedIncorporated 2005-10-28 (21 years) |
| 27 | Score, grade E |
A transparent, rules-based score from filed data only: every point lists its evidence. It is not a credit rating or advice. How the score is computed.
06
Ownership and control
- Dr Vaughan William Wittorff
- owns 75–100% of shares
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents.
07
Timeline
- Next accounts duein 282 days
- Confirmation statement duein 20 days
- Accounts period endNet liabilities £2,422 · small accounts
- Accounts period endNet liabilities £1,646 · small accounts
- Incorporated
08
Similar companies in Cambridge
- CAMBRIDGE FIRE RESEARCH LIMITEDCambridge · inc. Oct 2005
- TOUCHTILE LIMITEDCambridge · inc. Sept 2005
- SAVILLE SOLVER LIMITEDEly · inc. Jul 2005
- INNOMATICA LIMITEDCambridge · inc. Mar 2006
- PRODUCTLIFE LIMITEDCambridge · inc. Feb 2005
- U-BLOX LUTON LIMITEDCambridge · inc. Sept 2006
All companies incorporated on 28 October 2005 · in Oct 2005.
09
Reminders for COMPLEX SYSTEMS RESEARCH LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.