- Companies
- Plumbers and heating engineers
- London
- Thermacore Renewables Ltd
Thermacore Renewables Ltd
- Company number
- 17412726
- Incorporated
- 21 Aug 2026
- Registered office
- 38 Millicent Grove, London, N13 6HQ
- Nature of business
- Plumbing, heat and air-conditioning installation
Thermacore Renewables Ltd is a newly incorporated private limited company registered in London, company number 17412726, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 21 May 2028, and its first CT600 is due at HMRC on 20 August 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.
Is this your company?
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Where Thermacore Renewables Ltd is registered
The registered office is in London (N13), in the Enfield local authority area, London. Show N13 6HQ on a map.
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What happens if Thermacore Renewables 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 21 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 22 May 2028 to 21 Jun 2028 | £150 |
| 1 to 3 months late | 22 Jun 2028 to 21 Aug 2028 | £375 |
| 3 to 6 months late | 22 Aug 2028 to 21 Nov 2028 | £750 |
| More than 6 months late | From 22 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 17412726
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 August 2026
- Registered office
- 38 Millicent Grove, London, N13 6HQ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in London
Other active plumbing and heating companies registered in London.
- Thermaflo Ltd2026
- Thermal Efficient Ltd2020
- Thermal Solutions Ltd2024
- Thermasure Ltd2022
- Thermoflow Heating & Plumbing Ltd2026
- Thermoflow Installations Ltd2026
- Thermopads UK Limited2008
- Thermotech Installations Limited2024
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Thermacore Renewables Ltd's accounts due?
Thermacore Renewables Ltd's next accounts are due at Companies House by 21 May 2028 (in 586 days), covering the period to 31 August 2027.
When is Thermacore Renewables 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 20 August 2027, due by 20 August 2028, and one for the period to 31 August 2027, due by 31 August 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Thermacore Renewables Ltd still trading?
Thermacore Renewables 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 Thermacore Renewables Ltd do?
Thermacore Renewables Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Thermacore Renewables Ltd?
Thermacore Renewables Ltd was incorporated on 21 August 2026, less than a year ago.
What is the penalty if Thermacore Renewables 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 Thermacore Renewables 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.