INTERLOCK COMPUTER SYSTEMS LIMITED
Company details
| Company number | 01905256 |
|---|---|
| Status | Active |
| Company type | Private Limited Company |
| Incorporated | 16 April 1985 |
| Registered office | PO Box 4385, 01905256 - COMPANIES HOUSE DEFAULT ADDRESS, CARDIFF, CF14 8LH · More companies in CF14 |
| Nature of business (SIC) | 62020 — Information technology consultancy activities |
| Accounting reference date | 31 March |
| Next accounts due | 31 December 2026 (last made up to 31 March 2025) |
| Last accounts type | Micro Entity |
| Next confirmation statement due | 11 March 2027 (last made up to 25 February 2026) |
Source: Companies House Free Company Data Product, 1 November 2026. View filing history, officers and PSCs on Companies House.
Summary
INTERLOCK COMPUTER SYSTEMS LIMITED is a private limited company registered in the UK under company number 01905256. It was incorporated on 16 April 1985 and its current status is active.
The registered office address is PO Box 4385, 01905256 - COMPANIES HOUSE DEFAULT ADDRESS, CARDIFF, CF14 8LH.
Its declared nature of business is information technology consultancy activities (SIC 62020).
The next accounts are due by 31 December 2026 and the next confirmation statement by 11 March 2027.
About INTERLOCK COMPUTER SYSTEMS LIMITED
Company type and jurisdiction
INTERLOCK COMPUTER SYSTEMS LIMITED 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 01905256 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 41 years and 6 months.
What INTERLOCK COMPUTER SYSTEMS LIMITED does
On the public register, INTERLOCK COMPUTER SYSTEMS LIMITED lists its activity using the UK Standard Industrial Classification (SIC 2007): information technology consultancy activities (62020). This places it in the information and communication 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 INTERLOCK COMPUTER SYSTEMS LIMITED is registered
Its registered office is in Cardiff (postcode district CF14). 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 CF14.
Accounts and filing deadlines
INTERLOCK COMPUTER SYSTEMS LIMITED must file its next annual accounts by 31 December 2026. 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 11 March 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 INTERLOCK COMPUTER SYSTEMS LIMITED
Check that the company name and number on its invoices and website match 01905256, 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 INTERLOCK COMPUTER SYSTEMS LIMITED?
The Companies House company number of INTERLOCK COMPUTER SYSTEMS LIMITED is 01905256.
Is INTERLOCK COMPUTER SYSTEMS LIMITED still trading?
INTERLOCK COMPUTER SYSTEMS LIMITED is listed as active on the Companies House register.
What is the registered office address of INTERLOCK COMPUTER SYSTEMS LIMITED?
The registered office of INTERLOCK COMPUTER SYSTEMS LIMITED is PO Box 4385, 01905256 - COMPANIES HOUSE DEFAULT ADDRESS, CARDIFF, CF14 8LH.
When was INTERLOCK COMPUTER SYSTEMS LIMITED incorporated?
INTERLOCK COMPUTER SYSTEMS LIMITED was incorporated on 16 April 1985.
What does INTERLOCK COMPUTER SYSTEMS LIMITED do?
Its nature of business (SIC) is: 62020 - Information technology consultancy activities.
When are INTERLOCK COMPUTER SYSTEMS LIMITED's next accounts due?
The next accounts of INTERLOCK COMPUTER SYSTEMS LIMITED are due by 31 December 2026.
When is INTERLOCK COMPUTER SYSTEMS LIMITED's confirmation statement due?
The next confirmation statement of INTERLOCK COMPUTER SYSTEMS LIMITED is due by 11 March 2027.
How old is INTERLOCK COMPUTER SYSTEMS LIMITED?
INTERLOCK COMPUTER SYSTEMS LIMITED was incorporated on 16 April 1985, so it is 41 years and 6 months old.
Who are the directors of INTERLOCK COMPUTER SYSTEMS LIMITED?
The current directors, secretaries and people with significant control of INTERLOCK COMPUTER SYSTEMS LIMITED are listed on the officers page of company 01905256 on the Companies House website.
What is the VAT number of INTERLOCK COMPUTER SYSTEMS LIMITED?
VAT numbers are issued by HMRC, not Companies House, and are not part of the company record. Ask INTERLOCK COMPUTER SYSTEMS LIMITED for its VAT number (GB followed by 9 digits) and check it with a VAT number checker.