COMPLEX LTD

Company details

Source: Companies House Free Company Data Product, 1 November 2026. View filing history, officers and PSCs on Companies House.

Summary

COMPLEX LTD is a private limited company registered in the UK under company number 16543829. It was incorporated on 26 June 2025 and its current status is active.

The registered office address is 82A JAMES CARTER ROAD, MILDENHALL, BURY ST. EDMUNDS, IP28 7DE, ENGLAND.

Its declared nature of business is architectural activities (SIC 71111); engineering related scientific and technical consulting activities (SIC 71122).

The next accounts are due by 26 March 2027 and the next confirmation statement by 9 July 2026.

About COMPLEX LTD

Company type and jurisdiction

COMPLEX 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 16543829 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 1 year and 4 months.

What COMPLEX LTD does

On the public register, COMPLEX LTD lists 2 activities using the UK Standard Industrial Classification (SIC 2007): architectural activities (71111); engineering related scientific and technical consulting activities (71122). 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 LTD is registered

Its registered office is in Bury St. Edmunds (postcode district IP28). 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 IP28.

Accounts and filing deadlines

COMPLEX LTD must file its next annual accounts by 26 March 2027. So far no accounts have been filed yet, which is normal for a company less than about 21 months old. Its next confirmation statement, which confirms its officers, shareholders and registered office are up to date, is due by 9 July 2026 and is overdue. 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 LTD

Check that the company name and number on its invoices and website match 16543829, 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.

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