- Companies
- Plumbers and heating engineers
- Watford
- Teraheat Ltd
Teraheat Ltd
- Company number
- 10044103
- Incorporated
- 4 Mar 201610 years trading
- Registered office
- 300 High Road, Leavesden, Watford, WD25 7EB
- Nature of business
- Plumbing, heat and air-conditioning installation; Painting; Other specialised construction activities n.e.c.
Teraheat Ltd is a 10-year-old private limited company registered in Watford, company number 10044103, one of 124 plumbing and heating companies in Watford. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £671 (+215.1%) on the year before, to £983.
- Net assets rose in 4 of 8 year-on-year comparisons on record.
- Current assets of £91K against £92K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £983 | £25K | £91K | £92K | 1 |
| 31 Mar 2024 | £312 | £99K | £122K | 1 | |
| 31 Mar 2023 | £1,089 | £165K | £169K | 1 | |
| 31 Mar 2022 | £4,062 | £42K | £108K | £112K | 2 |
| 31 Mar 2021 | £2,912 | £75K | £75K | 2 | |
| 31 Mar 2020 | £1,043 | £35K | £38K | ||
| 31 Mar 2019 | £4,568 | £14K | £14K | £9,173 | |
| 31 Mar 2018 | £21K | £48K | £16K | ||
| 31 Mar 2017 | £8,601 | £21K | £27K | £12K |
Where Teraheat Ltd is registered
The registered office is in Watford (WD25), in the Watford local authority area, East of England. Show WD25 7EB on a map.
Other trade companies in WD25
- Ardel Construction LimitedBuilders
- Velocity Mechanical LtdPlumbers and heating engineers
- Jpjcm LimitedFinishing trades
- Mix & Go LtdSpecialist contractors
- Colney Prestige Autos LtdMotor traders
- Prestige Garden Services LtdLandscapers and gardeners
- Destinyd LtdMachinery repair and installation
- Leaf Space LimitedFinishing trades
What happens if Teraheat 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 10044103
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 March 2016 (10 years ago)
- Registered office
- 300 High Road, Leavesden, Watford, WD25 7EB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Painting (SIC 43341)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 March (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 14 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 Watford
Other active plumbing and heating companies registered in Watford.
- Thames Interiors Ltd2022
- Thermo Heating & Cooling Ltd2025
- Todosi Plumbing Limited2016
- Tower Gas Ltd2016
- TSQ Building Service Ltd2024
- Ujetrans Ltd2025
- Urantub Ltd2026
- V Plumb Ltd2024
All plumbing and heating companies in Watford · All trades in Watford · Plumbers and heating engineers across the UK
Frequently asked questions
When are Teraheat Ltd's accounts due?
Teraheat Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Teraheat Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Teraheat Ltd still trading?
Teraheat 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 Teraheat Ltd do?
Teraheat Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Painting (SIC 43341); Other specialised construction activities n.e.c. (SIC 43999).
How old is Teraheat Ltd?
Teraheat Ltd was incorporated on 4 March 2016, 10 years ago.
What is the penalty if Teraheat 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 Teraheat 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.