- Companies
- Plumbers and heating engineers
- London
- CM Heating Limited
CM Heating Limited
- Company number
- 04604572
- Incorporated
- 29 Nov 200223 years trading
- Registered office
- 40 Botha Road, Plaistow, London, E13 8PQ
- Nature of business
- Plumbing, heat and air-conditioning installation
CM Heating Limited is a 23-year-old private limited company registered in London, company number 04604572, one of 2,972 plumbing and heating companies in London. 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 down £5,242 (-21.6%) on the year before, to £19K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £37K against £21K owed within a year: 1.8 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £19K | £32K | £37K | £21K | 2 |
| 31 Dec 2024 | £24K | £42K | £49K | £28K | 2 |
| 31 Dec 2023 | £18K | £29K | £41K | £29K | 2 |
| 31 Dec 2022 | £12K | £24K | £35K | £29K | 2 |
| 31 Dec 2021 | £19K | £26K | £37K | £23K | 2 |
| 31 Dec 2020 | £13K | £20K | £31K | £22K | 2 |
| 31 Dec 2019 | £17K | £25K | £35K | £21K | 2 |
| 31 Dec 2018 | £18K | £24K | £38K | £23K | |
| 31 Dec 2017 | £11K | £15K | £26K | £20K | |
| 31 Dec 2016 | £31K | £31K | £44K | £20K |
Where CM Heating Limited is registered
The registered office is in London (E13), in the Newham local authority area, London. Show E13 8PQ on a map.
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What happens if CM Heating 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
- 04604572
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 November 2002 (23 years ago)
- Registered office
- 40 Botha Road, Plaistow, London, E13 8PQ
- 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
- 11 November 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.
- CMC Plumbing Drainage & Heating Ltd2022
- CMCV Mechanical Limited2026
- CMD Heating Ltd2021
- CMR Plumbing & Heating Limited2025
- CN Plumbing and Drainage Services Limited2026
- Co & Gas Limited2016
- Co2 Reduction Ltd2021
- Colak Maintenance Ltd2021
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are CM Heating Limited's accounts due?
CM Heating 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 CM Heating 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 CM Heating Limited still trading?
CM Heating 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 CM Heating Limited do?
CM Heating Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is CM Heating Limited?
CM Heating Limited was incorporated on 29 November 2002, 23 years ago.
What is the penalty if CM Heating 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 CM Heating 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.