- Companies
- Plumbers and heating engineers
- London
- Climatrix Ltd
Climatrix Ltd
- Company number
- 12708263
- Incorporated
- 30 Jun 20206 years trading
- Registered office
- Climatrix, 183A Lewisham Way, London, SE4 1UY
- Nature of business
- Plumbing, heat and air-conditioning installation
Climatrix Ltd is a 6-year-old private limited company registered in London, company number 12708263, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 29 March 2027, and the CT600 for the period to 29 June 2026 is due at HMRC on 29 June 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 down £5,017 (-26.2%) on the year before, to £14K.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £51K against £52K owed within a year: 1.0 times cover.
- 3 employees on average, up from 0 the year before.
- 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 |
|---|---|---|---|---|---|
| 30 Jun 2025 | £14K | £51K | £52K | 3 | |
| 30 Jun 2024 | £19K | £30K | £14K | 0 | |
| 30 Jun 2023 | £38K | £55K | £16K | 3 | |
| 30 Jun 2022 | £573 | £17K | £19K | 3 | |
| 30 Jun 2021 | £6,838 | £6,838 | 1 |
Where Climatrix Ltd is registered
The registered office is in London (SE4), in the Lewisham local authority area, London. Show SE4 1UY on a map.
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What happens if Climatrix 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 29 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Mar 2027 to 29 Apr 2027 | £150 |
| 1 to 3 months late | 30 Apr 2027 to 29 Jun 2027 | £375 |
| 3 to 6 months late | 30 Jun 2027 to 29 Sep 2027 | £750 |
| More than 6 months late | From 30 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Jun 2027 | £200 |
| 3 months late | 29 Sep 2027 | another £200 |
| 6 months late | 29 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Jun 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
- 12708263
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 June 2020 (6 years ago)
- Registered office
- Climatrix, 183A Lewisham Way, London, SE4 1UY
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 29 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 28 September 2025
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.
- Clinton Renovations Limited2025
- CM Heating Limited2002
- CMC Plumbing Drainage & Heating Ltd2022
- CMCV Mechanical Limited2026
- CMD Heating Ltd2021
- CMR Plumbing & Heating Limited2025
- CN Plumbing and Drainage Services Limited2026
- Co & Gas Limited2016
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Climatrix Ltd's accounts due?
Climatrix Ltd's next accounts are due at Companies House by 29 March 2027 (in 167 days), covering the period to 29 June 2026.
When is Climatrix Ltd's CT600 due?
The CT600 for the period to 29 June 2026 is due at HMRC by 29 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 March 2027.
Is Climatrix Ltd still trading?
Climatrix 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 Climatrix Ltd do?
Climatrix Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Climatrix Ltd?
Climatrix Ltd was incorporated on 30 June 2020, 6 years ago.
What is the penalty if Climatrix 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 Climatrix 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.