COMPLEX SYSTEMS ENGINEERING LTD
Company details
| Company number | 04863255 |
|---|---|
| Status | Active |
| Company type | Private Limited Company |
| Incorporated | 12 August 2003 |
| Registered office | LONESOME FARM, LONESOME LANE, REIGATE, SURREY, RH2 7QT · More companies in RH2 |
| Nature of business (SIC) | 72190 — Other research and experimental development on natural sciences and engineering 74909 — Other professional, scientific and technical activities n.e.c. |
| Accounting reference date | 31 August |
| Next accounts due | 31 May 2027 (last made up to 31 August 2025) |
| Last accounts type | Micro Entity |
| Next confirmation statement due | 26 July 2027 (last made up to 12 July 2026) |
Source: Companies House Free Company Data Product, 1 November 2026. View filing history, officers and PSCs on Companies House.
Summary
COMPLEX SYSTEMS ENGINEERING LTD is a private limited company registered in the UK under company number 04863255. It was incorporated on 12 August 2003 and its current status is active.
The registered office address is LONESOME FARM, LONESOME LANE, REIGATE, SURREY, RH2 7QT.
Its declared nature of business is other research and experimental development on natural sciences and engineering (SIC 72190); other professional, scientific and technical activities n.e.c. (SIC 74909).
The next accounts are due by 31 May 2027 and the next confirmation statement by 26 July 2027.
About COMPLEX SYSTEMS ENGINEERING LTD
Company type and jurisdiction
COMPLEX SYSTEMS ENGINEERING LTD is a private company limited by shares. Its owners (shareholders) are only liable for its debts up to the value of their shares, it must have at least one director, and its shares cannot be offered to the public. Its company number 04863255 shows it was registered in England and Wales, so its records are kept by Companies House in Cardiff. It has been on the register for 23 years and 2 months.
What COMPLEX SYSTEMS ENGINEERING LTD does
On the public register, COMPLEX SYSTEMS ENGINEERING LTD lists 2 activities using the UK Standard Industrial Classification (SIC 2007): other research and experimental development on natural sciences and engineering (72190); other professional, scientific and technical activities n.e.c. (74909). This places it in the professional, scientific and technical activities section of the economy. SIC codes describe what a company says it does; they are not a licence and are not checked by Companies House. See other companies with the same SIC code.
Where COMPLEX SYSTEMS ENGINEERING LTD is registered
Its registered office is in Reigate (postcode district RH2). The registered office is the official address for letters from Companies House, HMRC and the courts. It must be in the same UK jurisdiction where the company was registered, but it does not have to be where the business trades: many companies use their accountant's or a formation agent's address. Browse other companies in RH2.
Accounts and filing deadlines
COMPLEX SYSTEMS ENGINEERING LTD must file its next annual accounts by 31 May 2027. The last accounts on the register were micro-entity accounts: a very small company (turnover up to £1m, balance sheet up to £500,000, 10 or fewer employees) that files a simplified balance sheet. Its next confirmation statement, which confirms its officers, shareholders and registered office are up to date, is due by 26 July 2027. A private company that files its accounts late gets an automatic penalty of £150 if they are up to one month late, rising to £375, £750 and £1,500 after six months, and the penalty is doubled if accounts are late two years in a row. A company that does not file a confirmation statement can be struck off the register.
Before you do business with COMPLEX SYSTEMS ENGINEERING LTD
Check that the company name and number on its invoices and website match 04863255, read its latest accounts and confirmation statement, and look up its directors and people with significant control on the official register. If it charges VAT, ask for its VAT number and check it with our VAT number checker: a company number and a VAT number are different things. How to check a UK company.
Frequently asked questions
What is the company number of COMPLEX SYSTEMS ENGINEERING LTD?
The Companies House company number of COMPLEX SYSTEMS ENGINEERING LTD is 04863255.
Is COMPLEX SYSTEMS ENGINEERING LTD still trading?
COMPLEX SYSTEMS ENGINEERING LTD is listed as active on the Companies House register.
What is the registered office address of COMPLEX SYSTEMS ENGINEERING LTD?
The registered office of COMPLEX SYSTEMS ENGINEERING LTD is LONESOME FARM, LONESOME LANE, REIGATE, SURREY, RH2 7QT.
When was COMPLEX SYSTEMS ENGINEERING LTD incorporated?
COMPLEX SYSTEMS ENGINEERING LTD was incorporated on 12 August 2003.
What does COMPLEX SYSTEMS ENGINEERING LTD do?
Its nature of business (SIC) is: 72190 - Other research and experimental development on natural sciences and engineering; 74909 - Other professional, scientific and technical activities n.e.c..
When are COMPLEX SYSTEMS ENGINEERING LTD's next accounts due?
The next accounts of COMPLEX SYSTEMS ENGINEERING LTD are due by 31 May 2027.
When is COMPLEX SYSTEMS ENGINEERING LTD's confirmation statement due?
The next confirmation statement of COMPLEX SYSTEMS ENGINEERING LTD is due by 26 July 2027.
How old is COMPLEX SYSTEMS ENGINEERING LTD?
COMPLEX SYSTEMS ENGINEERING LTD was incorporated on 12 August 2003, so it is 23 years and 2 months old.
Who are the directors of COMPLEX SYSTEMS ENGINEERING LTD?
The current directors, secretaries and people with significant control of COMPLEX SYSTEMS ENGINEERING LTD are listed on the officers page of company 04863255 on the Companies House website.
What is the VAT number of COMPLEX SYSTEMS ENGINEERING LTD?
VAT numbers are issued by HMRC, not Companies House, and are not part of the company record. Ask COMPLEX SYSTEMS ENGINEERING LTD for its VAT number (GB followed by 9 digits) and check it with a VAT number checker.