- Companies
- Electricians
- London
- Defendx Fire Protection Ltd
Defendx Fire Protection Ltd
- Company number
- 16810904
- Incorporated
- 27 Oct 2025
- Registered office
- 20 Wenlock Road, London, N1 7GU
- Nature of business
- Electrical installation; Other construction installation; Other specialised construction activities n.e.c.; Fire service activities
Defendx Fire Protection Ltd is a newly incorporated private limited company registered in London, company number 16810904, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 27 July 2027, and its first CT600 is due at HMRC on 26 October 2027.
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 Defendx Fire Protection Ltd is registered
The registered office is in London (N1), in the Hackney local authority area, London. Show N1 7GU on a map.
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- Get IT Done Builders LtdJoiners and carpenters
- Evolution Products LimitedMotor traders
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- Kenneth Brady LtdElectricians
- UK Import Export LtdBuilders
- Magic Door Services LimitedMachinery repair and installation
Shared registered office
1,583 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 Defendx Fire Protection 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 27 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Jul 2027 to 27 Aug 2027 | £150 |
| 1 to 3 months late | 28 Aug 2027 to 27 Oct 2027 | £375 |
| 3 to 6 months late | 28 Oct 2027 to 27 Jan 2028 | £750 |
| More than 6 months late | From 28 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 2028 | 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
- 16810904
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 October 2025
- Registered office
- 20 Wenlock Road, London, N1 7GU
- Nature of business
- Electrical installation (SIC 43210)
Other construction installation (SIC 43290)
Other specialised construction activities n.e.c. (SIC 43999)
Fire service activities (SIC 84250) - Year end
- 31 October (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.
- Delev Electrical Limited2014
- Delta Connections Ltd2018
- Delta Installations Ltd2001
- Delta Mike Construction Ltd2021
- Delta Sports Services UK Ltd2019
- Deltawatt Ltd2024
- Demse Technical Systems Limited2004
- Dencom Electronics Ltd2023
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Defendx Fire Protection Ltd's accounts due?
Defendx Fire Protection Ltd's next accounts are due at Companies House by 27 July 2027 (in 287 days), covering the period to 31 October 2026.
When is Defendx Fire Protection 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 26 October 2026, due by 26 October 2027, and one for the period to 31 October 2026, due by 31 October 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Defendx Fire Protection Ltd still trading?
Defendx Fire Protection 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 Defendx Fire Protection Ltd do?
Defendx Fire Protection Ltd is registered under Electrical installation (SIC 43210); Other construction installation (SIC 43290); Other specialised construction activities n.e.c. (SIC 43999); Fire service activities (SIC 84250).
How old is Defendx Fire Protection Ltd?
Defendx Fire Protection Ltd was incorporated on 27 October 2025, less than a year ago.
What is the penalty if Defendx Fire Protection 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 Defendx Fire Protection 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.