- Companies
- Electricians
- London
- Detronium Ltd
Detronium Ltd
- Company number
- 16711330
- Incorporated
- 11 Sep 20251 year trading
- Registered office
- 167-169 Great Portland Street, London, W1W 5PF
- Nature of business
- Electrical installation; Agents specialized in the sale of other particular products; Retail sale via mail order houses or via Internet
Detronium Ltd is a 1-year-old private limited company registered in London, company number 16711330, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 11 June 2027, and its first CT600 is due at HMRC on 10 September 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 Detronium Ltd is registered
The registered office is in London (W1W), in the Westminster local authority area, London. Show W1W 5PF on a map.
Other trade companies in W1W
- Civaris LtdSpecialist contractors
- R&R Construction Group LtdBuilders
- Aurum Cooling LtdPlumbers and heating engineers
- Steam Wood Stone LtdFinishing trades
- Hau Developments LimitedProperty developers
- Group Atlas Financial 83 LtdPainters and decorators
- Energy Reward LtdMotor traders
- Holly’S Housekeeping LtdCleaning companies
Shared registered office
1,494 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 Detronium 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 11 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 12 Jun 2027 to 11 Jul 2027 | £150 |
| 1 to 3 months late | 12 Jul 2027 to 11 Sep 2027 | £375 |
| 3 to 6 months late | 12 Sep 2027 to 11 Dec 2027 | £750 |
| More than 6 months late | From 12 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 16711330
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 September 2025 (1 year ago)
- Registered office
- 167-169 Great Portland Street, London, W1W 5PF
- Nature of business
- Electrical installation (SIC 43210)
Agents specialized in the sale of other particular products (SIC 46180)
Retail sale via mail order houses or via Internet (SIC 47910) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 10 September 2026
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.
- Deve Electricals Ltd2023
- Devi Electrical Ltd2019
- Devis Critical Infrastructure Ltd2020
- Devkalp Services Limited2024
- DF Sec Ltd2024
- DFB Energy Ltd2020
- DG Project Management Ltd2026
- Dhruv Electrical Ltd2026
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Detronium Ltd's accounts due?
Detronium Ltd's next accounts are due at Companies House by 11 June 2027 (in 242 days), covering the period to 30 September 2026.
When is Detronium 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 10 September 2026, due by 10 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Detronium Ltd still trading?
Detronium Ltd is listed as active on the Companies House register (checked 12 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 Detronium Ltd do?
Detronium Ltd is registered under Electrical installation (SIC 43210); Agents specialized in the sale of other particular products (SIC 46180); Retail sale via mail order houses or via Internet (SIC 47910).
How old is Detronium Ltd?
Detronium Ltd was incorporated on 11 September 2025, 1 year ago.
What is the penalty if Detronium 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 Detronium Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.