- Companies
- Plumbers and heating engineers
- Barnsley
- Thermotec Group Ltd
Thermotec Group Ltd
- Company number
- 15291350
- Incorporated
- 17 Nov 20232 years trading
- Registered office
- Modern House, Summer Lane, Barnsley, S70 2NP
- Nature of business
- Plumbing, heat and air-conditioning installation
Thermotec Group Ltd is a 2-year-old private limited company registered in Barnsley, company number 15291350, one of 123 plumbing and heating companies in Barnsley. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £1,134 (+12.6%) on the year before, to £10K.
- Current assets of £26K against £25K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £10K | £26K | £25K | 1 | |
| 30 Nov 2024 | £8,988 | £24K | £27K | 1 |
Where Thermotec Group Ltd is registered
The registered office is in Barnsley (S70), in the Barnsley local authority area, Yorkshire and The Humber. Show S70 2NP on a map.
Other trade companies in S70
- Perfect Automotive LtdMotor traders
- BLF Plumbing LimitedPlumbers and heating engineers
- R&J Gas Services LtdPlumbers and heating engineers
- Revora Performance LtdMechanics and garages
- Sykes & Sons Water Utilities LtdCivil engineering
- Cropcore LtdInstallers
- LW Handyman LtdCleaning companies
- Ehv Barnsley LtdMechanics and garages
Also registered at this address
21 other companies use the same registered office as Thermotec Group Ltd.
- Abstract Building and Maintenance LtdBuilders
- Andykrail LtdCivil engineering
- B.Raine Plastering LtdPlasterers
- CT Utilities (Yorkshire) LtdCivil engineering
- Home Bar LimitedMachinery repair and installation
- Iconic Edge Group Yorkshire LtdJoiners and carpenters
- J. Reekie Electrical LtdElectricians
- L & K Utilities LtdInstallers
- L Y Construction & Building LimitedBuilders
- Leith Fleet Maintenance LtdMechanics and garages
- Nu-Lec Electrical Solutions LtdElectricians
- Pennine Tiling Contractors LimitedFloor and wall tilers
- Planned Maintenance Testing Services LtdElectricians
- Portland Street Garage LtdMechanics and garages
- R.D Renewable Energy Services LtdPlumbers and heating engineers
- S.J. Electrical (Yorkshire) LimitedElectricians
- Smiley Construction LtdPlasterers
- Staleys Tree Solutions LtdLandscapers and gardeners
- TLH Utilities LtdCivil engineering
- Total Aircon LtdPlumbers and heating engineers
- WJS Plumbing & Heating Specialists LtdPlumbers and heating engineers
What happens if Thermotec 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 15291350
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 November 2023 (2 years ago)
- Registered office
- Modern House, Summer Lane, Barnsley, S70 2NP
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 10 September 2026
- Previous names
- Thermotec Property Development Ltd (until 5 Aug 2024)
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 Barnsley
Other active plumbing and heating companies registered in Barnsley.
- TJ Utilities Limited2026
- Total Aircon Ltd2026
- Trident Mechanical Group Ltd2024
- V & T (Plumbing & Heating Services) Limited1986
- Verity Heating Solutions Ltd2026
- Vortex Solar Solutions Ltd2023
- W.G.E. Renewables Ltd2021
- Waterless Urinal Services Limited2017
All plumbing and heating companies in Barnsley · All trades in Barnsley · Plumbers and heating engineers across the UK
Frequently asked questions
When are Thermotec Group Ltd's accounts due?
Thermotec Group Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Thermotec Group Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Thermotec Group Ltd still trading?
Thermotec Group Ltd is listed as active on the Companies House register (checked 13 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 Thermotec Group Ltd do?
Thermotec Group Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Thermotec Group Ltd?
Thermotec Group Ltd was incorporated on 17 November 2023, 2 years ago.
What is the penalty if Thermotec 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 Thermotec Group Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.