- Companies
- Electricians
- London
- Datum Fire Systems Ltd
Datum Fire Systems Ltd
- Company number
- 17485530
- Incorporated
- 28 Sep 2026
- Registered office
- 66 Paul Street, London, England, EC2A 4NA
- Nature of business
- Electrical installation; Technical testing and analysis; Security systems service activities
Datum Fire Systems Ltd is a newly incorporated private limited company registered in London, company number 17485530, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 28 June 2028, and its first CT600 is due at HMRC on 27 September 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Datum Fire Systems Ltd is registered
The registered office is in London (EC2A), in the Hackney local authority area, London. Show EC2A 4NA on a map.
Other trade companies in EC2A
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- Auraglasspartitions LtdGlaziers
- A2D Professional Cleaning LtdCleaning companies
- Matson Co. LtdProperty developers
- Paint Hub LimitedMechanics and garages
- SJK Construction & Management LtdBuilders
- Cenlora Cleaning Group LtdCleaning companies
Shared registered office
1,510 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Datum Fire Systems Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 28 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Jun 2028 to 28 Jul 2028 | £150 |
| 1 to 3 months late | 29 Jul 2028 to 28 Sep 2028 | £375 |
| 3 to 6 months late | 29 Sep 2028 to 28 Dec 2028 | £750 |
| More than 6 months late | From 29 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 2029 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 17485530
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 September 2026
- Registered office
- 66 Paul Street, London, England, EC2A 4NA
- Nature of business
- Electrical installation (SIC 43210)
Technical testing and analysis (SIC 71200)
Security systems service activities (SIC 80200) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in London
Other active electrical contractors registered in London.
- David Coleman & Associates Limited2019
- Davraz Lighting Ltd2021
- Dawson & Son Electrical Contractors Limited1970
- Dawsons Electrical Services Ltd2014
- Day1 Solar Limited2025
- DB Sparks Ltd2026
- DBC Electrical Ltd2022
- Dbcomms and Electrical Limited2022
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Datum Fire Systems Ltd's accounts due?
Datum Fire Systems Ltd's next accounts are due at Companies House by 28 June 2028 (in 625 days), covering the period to 30 September 2027.
When is Datum Fire Systems Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 27 September 2027, due by 27 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Datum Fire Systems Ltd still trading?
Datum Fire Systems Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Datum Fire Systems Ltd do?
Datum Fire Systems Ltd is registered under Electrical installation (SIC 43210); Technical testing and analysis (SIC 71200); Security systems service activities (SIC 80200).
How old is Datum Fire Systems Ltd?
Datum Fire Systems Ltd was incorporated on 28 September 2026, less than a year ago.
What is the penalty if Datum Fire Systems Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Datum Fire Systems Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.