- Companies
- Plumbers and heating engineers
- St Leonards-on-Sea
- Thermo-Core Ltd
Thermo-Core Ltd
- Company number
- 16953248
- Incorporated
- 9 Jan 2026
- Registered office
- 430 Bexhill Road, St Leonards-on-Sea, TN38 8AS
- Nature of business
- Plumbing, heat and air-conditioning installation; Combined facilities support activities; Other business support service activities n.e.c.
Thermo-Core Ltd is a newly incorporated private limited company registered in St Leonards-on-Sea, company number 16953248, one of 14 plumbing and heating companies in St Leonards-on-Sea. Its next accounts are due at Companies House on 9 October 2027, and its first CT600 is due at HMRC on 8 January 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 Thermo-Core Ltd is registered
The registered office is in St Leonards-on-Sea (TN38), in the Hastings local authority area, South East. Show TN38 8AS on a map.
Other trade companies in TN38
- STH Property and Contracting LtdElectricians
- Greenacre Building Projects LtdProperty developers
- Vayo Property Group LtdProperty developers
- Noviq Development LtdBuilders
- Sussex Car Seats LtdMotor traders
- Auto Amd LtdMechanics and garages
- Coakley and Crooks LtdMotor traders
- Obe Fire and Power LtdElectricians
What happens if Thermo-Core 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 9 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 10 Oct 2027 to 9 Nov 2027 | £150 |
| 1 to 3 months late | 10 Nov 2027 to 9 Jan 2028 | £375 |
| 3 to 6 months late | 10 Jan 2028 to 9 Apr 2028 | £750 |
| More than 6 months late | From 10 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 16953248
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 January 2026
- Registered office
- 430 Bexhill Road, St Leonards-on-Sea, TN38 8AS
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Combined facilities support activities (SIC 81100)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 15 February 2026
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 St Leonards-on-Sea
Other active plumbing and heating companies registered in St Leonards-on-Sea.
- Triton Plumbing Solutions Ltd2023
- W H P Limited2007
- 1066 Plumbing and Heating Ltd2022
- Abcd Plumbing and Heating Limited2026
- B.Stevens Plumbing & Heating Ltd2024
- Brookman Plumbing & Heating Limited2024
- E-Heat Plumbing & Heating Ltd2017
- J Sinclair Plumbing and Heating Limited2023
All plumbing and heating companies in St Leonards-on-Sea · All trades in St Leonards-on-Sea · Plumbers and heating engineers across the UK
Frequently asked questions
When are Thermo-Core Ltd's accounts due?
Thermo-Core Ltd's next accounts are due at Companies House by 9 October 2027 (in 362 days), covering the period to 31 January 2027.
When is Thermo-Core 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 8 January 2027, due by 8 January 2028, and one for the period to 31 January 2027, due by 31 January 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Thermo-Core Ltd still trading?
Thermo-Core 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 Thermo-Core Ltd do?
Thermo-Core Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Combined facilities support activities (SIC 81100); Other business support service activities n.e.c. (SIC 82990).
How old is Thermo-Core Ltd?
Thermo-Core Ltd was incorporated on 9 January 2026, less than a year ago.
What is the penalty if Thermo-Core 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 Thermo-Core 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.