- Companies
- Plumbers and heating engineers
- Watford
- DM Heating & Plumbing Limited
DM Heating & Plumbing Limited
- Company number
- 10513810
- Incorporated
- 7 Dec 20169 years trading
- Registered office
- 17 ST. James Road, Watford, WD18 0DZ
- Nature of business
- Plumbing, heat and air-conditioning installation
DM Heating & Plumbing Limited is a 9-year-old private limited company registered in Watford, company number 10513810, one of 124 plumbing and heating companies in Watford. 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 down £25K on the year before, to -£23K.
- Net assets rose in 3 of 8 year-on-year comparisons on record.
- Current assets of £4,919 against £28K owed within a year: 0.2 times cover.
- 2 employees 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 |
|---|---|---|---|---|---|
| 30 Nov 2025 | -£23K | -£2,760 | £4,919 | £28K | 2 |
| 30 Nov 2024 | £1,316 | £547 | £1,543 | 2 | |
| 30 Nov 2023 | £2,994 | £642 | £7,253 | 2 | |
| 30 Nov 2022 | £1,794 | £2,571 | 2 | ||
| 30 Nov 2021 | £2,757 | £2,437 | 2 | ||
| 30 Nov 2020 | £666 | £9,820 | £4,590 | 2 | |
| 30 Nov 2019 | £3,337 | £13K | 3 | ||
| 30 Nov 2018 | £556 | £36K | £43K | ||
| 30 Nov 2017 | £43K | £54K |
Where DM Heating & Plumbing Limited is registered
The registered office is in Watford (WD18), in the Watford local authority area, East of England. Show WD18 0DZ on a map.
Other trade companies in WD18
- Aston Contractors LimitedInstallers
- Basky 613 LtdProperty developers
- M&E Motors LtdMotor traders
- Jeservicesgroup LtdBuilders
- RCK’S Car Wash Ltd LtdMechanics and garages
- S Buildx LtdBuilders
- CDP Mechanical Contracting LtdPlumbers and heating engineers
- Lane Commercial LtdCivil engineering
What happens if DM Heating & Plumbing 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 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
- 10513810
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 December 2016 (9 years ago)
- Registered office
- 17 ST. James Road, Watford, WD18 0DZ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 11 March 2026
- Previous names
- MD Heating&Pluming Limited (until 15 Dec 2016)
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.
- DPH Mechanical Ltd2016
- E&E Heating and Plumbing Ltd2020
- Ek Hydro-Tech Pro Limited2022
- Em Plumbing and Heat Ltd2024
- Eva Plumbing Ltd2022
- Everstead Building Services Ltd2026
- Excel Maintenance Services Ltd2016
- Flow Speed Plumbing Ltd2025
All plumbing and heating companies in Watford · All trades in Watford · Plumbers and heating engineers across the UK
Frequently asked questions
When are DM Heating & Plumbing Limited's accounts due?
DM Heating & Plumbing Limited's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is DM Heating & Plumbing Limited'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 DM Heating & Plumbing Limited still trading?
DM Heating & Plumbing 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 DM Heating & Plumbing Limited do?
DM Heating & Plumbing Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is DM Heating & Plumbing Limited?
DM Heating & Plumbing Limited was incorporated on 7 December 2016, 9 years ago.
What is the penalty if DM Heating & Plumbing 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 DM Heating & Plumbing 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.