- Companies
- Plumbers and heating engineers
- Caerphilly
- Terratherm Limited
Terratherm Limited
- Company number
- 13357447
- Incorporated
- 26 Apr 20215 years trading
- Registered office
- Unit 3&4 Maritme Court, Bedwas House Industrial Estate, Caerphilly, CF83 8HU
- Nature of business
- Plumbing, heat and air-conditioning installation
Terratherm Limited is a 5-year-old private limited company registered in Caerphilly, company number 13357447, one of 32 plumbing and heating companies in Caerphilly. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £374K (+61.3%) on the year before, to £985K.
- Net assets rose in 4 of 4 year-on-year comparisons on record.
- Current assets of £2.3M against £1.5M owed within a year: 1.6 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £985K | £790K | £2.3M | £1.5M | 0 |
| 31 Dec 2024 | £611K | £424K | £2.2M | £1.7M | 15 |
| 31 Dec 2023 | £301K | £56K | £966K | £693K | 3 |
| 31 Dec 2022 | £232K | £146K | £452K | £233K | 2 |
| 31 Dec 2021 | £9,683 | £15K | £56K | £64K | 2 |
Public contracts won
Terratherm Limited has one public sector contract award on record; the ones with their own published value total £41K (2025). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| NHS Wales Shared Services Partnership-Procurement Services (hosted by Velindre University NHS Trust) | UHW CFPU Chiller Controls Upgrade | £41K | 13 Feb 2025 |
Where Terratherm Limited is registered
The registered office is in Caerphilly (CF83), in the Caerphilly local authority area, Wales. Show CF83 8HU on a map.
Other trade companies in CF83
- Owen PM LimitedBuilders
- Ecamscymru LtdMachinery repair and installation
- Bee Green Plumbing Solutions LtdPlumbers and heating engineers
- Tyga Constuction LimitedBuilders
- Grip Rip MX LtdMotor traders
- Da' Grave LtdRepair services
- First Class Cleaning Solutions LtdCleaning companies
- Vehicle Accident Repairs Solutions LtdMotor traders
What happens if Terratherm Limited 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 13357447
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 April 2021 (5 years ago)
- Registered office
- Unit 3&4 Maritme Court, Bedwas House Industrial Estate, Caerphilly, CF83 8HU
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 28 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 Caerphilly
Other active plumbing and heating companies registered in Caerphilly.
- Total Cooling Services Ltd2015
- Truscon Limited2024
- Ace Cooling Solutions Ltd2015
- Air Conditioning Systems Wales Limited2005
- Arco Construct Limited2026
- Bee Green Plumbing Solutions Ltd2026
- C. P. General Services Limited2001
- Caerphilly Plumbing and Heating Limited1973
All plumbing and heating companies in Caerphilly · All trades in Caerphilly · Plumbers and heating engineers across the UK
Frequently asked questions
When are Terratherm Limited's accounts due?
Terratherm Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Terratherm Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Terratherm Limited still trading?
Terratherm Limited 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 Terratherm Limited do?
Terratherm Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Terratherm Limited?
Terratherm Limited was incorporated on 26 April 2021, 5 years ago.
Has Terratherm Limited won public sector contracts?
Yes. Terratherm Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £41K), most recently from NHS Wales Shared Services Partnership-Procurement Services (hosted by Velindre University NHS Trust).
What is the penalty if Terratherm Limited 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 Terratherm Limited 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.