- Companies
- Electricians
- London
- DMT Electrical Group Ltd
DMT Electrical Group Ltd
- Company number
- 16147208
- Incorporated
- 20 Dec 20241 year trading
- Registered office
- Thomas Harris 1929 Shop Merton Abbey Mills, 18 Watermill Way, London, SW19 2RD
- Nature of business
- Electrical installation
DMT Electrical Group Ltd is a 1-year-old private limited company registered in London, company number 16147208, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 31 March 2026, as filed at Companies House.
Where DMT Electrical Group Ltd is registered
The registered office is in London (SW19), in the Merton local authority area, London. Show SW19 2RD on a map.
Other trade companies in SW19
- Firstfixlondon Ltd.Builders
- Rainbow One Construction UK LtdSpecialist contractors
- Base Bloc LimitedBuilders
- Concealed Climate LimitedPlumbers and heating engineers
- Morningside LtdProperty developers
- Cupi-Building LtdBuilders
- Crown Infra London LtdBuilders
- Aj & Co One LtdProperty developers
Shared registered office
38 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 DMT Electrical Group 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 16147208
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 December 2024 (1 year ago)
- Registered office
- Thomas Harris 1929 Shop Merton Abbey Mills, 18 Watermill Way, London, SW19 2RD
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 31 October 2025
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.
- Dna Telecoms Ltd2024
- Dna Engineering Ltd2026
- Dna Technical Solutions Ltd2021
- Dne Electrical Contractors Ltd2018
- DNM Mechanichal Services Ltd2021
- DNS Engineering Limited2011
- Doba Electrical Ltd2025
- Dolfin Electricals Ltd2010
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are DMT Electrical Group Ltd's accounts due?
DMT Electrical Group Ltd's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is DMT Electrical Group Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is DMT Electrical Group Ltd still trading?
DMT Electrical Group 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 DMT Electrical Group Ltd do?
DMT Electrical Group Ltd is registered under Electrical installation (SIC 43210).
How old is DMT Electrical Group Ltd?
DMT Electrical Group Ltd was incorporated on 20 December 2024, 1 year ago.
What is the penalty if DMT Electrical Group 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 DMT Electrical Group 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.