Data from the official company registers of 12 countries. Not an official register.

English

Complex Systems Engineering Ltd

Age23 years
older than 88% of its sector
Same activity, United Kingdom6,027live companies · 731st oldest
In Reigate3,558live companies · 3 in the same activity
At this address1only this company
Latest accounts2025micro-entity accounts, made up to 31 Aug 2025

In brief

Complex Systems Engineering Ltd is a private limited company incorporated in England and Wales on 12 August 2003. At 23 years old it is older than 88% of the 6,027 live companies whose main activity is other research and experimental development on natural sciences and engineering. Its registered office is in Reigate, Reigate and Banstead, South East. 3 live companies in Reigate share the same main activity. Its latest accounts were made up to 31 August 2025 and filed as micro-entity accounts.

Register details

Registered nameCOMPLEX SYSTEMS ENGINEERING LTD
Company number04863255
Company typePrivate Limited Company
Registered officeLonesome Farm, Lonesome Lane, RH2 7QT Reigate
JurisdictionEngland and Wales
Nature of business (UK SIC 2007)72190 Other research and experimental development on natural sciences and engineering · 74909 Other professional, scientific and technical activities n.e.c.
International sector (ISIC Rev.4)M · 72 Scientific research and development

Timeline

Register events, newest first.

  • Confirmation statement made up
  • Accounts made upMicro-entity accounts
  • Incorporated

Filings and charges

Deadlines and charge counts from the register.

Next accounts due31 May 2027
Accounting reference date31 August
Next confirmation statement26 July 2027
Last confirmation statement12 July 2026
Charges registered0
Outstanding · satisfied0 · 0

Charges are security interests (such as mortgages) registered against the company.

Other research and experimental development on natural sciences and engineering in the United Kingdom

Live companies whose main activity is 72190: 6,027 in total, median age 7 years, 758 incorporated in the past 12 months.

All 6,027 companies
This company's decadeOther decades
01,0002,0003,0004,0001880s: 11880s1890s: 11890s1910s: 21910s1930s: 31930s1940s: 21940s1950s: 131950s1960s: 171960s1970s: 271970s1980s: 1171980s1990s: 2981990s2000s: 9512000s2010s: 1,7832010s2020s: 2,8122020s
Incorporated per year, still live
02004006008002011: 14620112012: 1332013: 15120132014: 1872015: 19320152016: 1822017: 19020172018: 2252019: 22420192020: 2732021: 28020212022: 2562023: 33720232024: 4152025: 63120252026: 620

Location

Registered office in Reigate, Reigate and Banstead, South East.

Reigate
Live companies in Reigate3,558
Same activity in Reigate3
Live companies in Reigate and Banstead12,349
New in Reigate, past 12 months288

Similar companies

Live companies with the same main activity, nearest first.

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Sources

Register data: Companies House, Free Company Data Product, delivery of 1 October 2026. Places: ONS Postcode Directory (Open Government Licence v3.0). Sector names: Eurostat NACE Rev. 2. Context figures are computed by FirmsDB from these sources. This page is not an official register; check the official record before relying on it.