- Companies
- Plumbers and heating engineers
- London
- MJ Plumber and Heating Ltd
MJ Plumber and Heating Ltd
- Company number
- 14183178
- Incorporated
- 20 Jun 20224 years trading
- Registered office
- Flat 32 Dawes House, Orb Street, London, SE17 1RE
- Nature of business
- Plumbing, heat and air-conditioning installation
MJ Plumber and Heating Ltd is a 4-year-old private limited company registered in London, company number 14183178, one of 2,972 plumbing and heating companies in London. Companies House shows its accounts as overdue: they were due on 31 March 2026.
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 £2,100 (+173.6%) on the year before, to £3,310.
- Current assets of £6,427 against £3,117 owed within a year: 2.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2023 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2024 | £3,310 | £6,427 | £3,117 | 1 | |
| 30 Jun 2023 | £1,210 | £3,685 | £2,475 | 1 |
Who runs and owns MJ Plumber and Heating Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| M*** J*** | Director | Jun 2022 |
Person with significant control
Where MJ Plumber and Heating Ltd is registered
The registered office is in London (SE17), in the Southwark local authority area, London. Show SE17 1RE on a map.
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What happens if MJ Plumber and Heating Ltd files late
If the accounts reach Companies House today, the late filing penalty is £1,500 (£3,000 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2026 to 30 Apr 2026 | £150 |
| 1 to 3 months late | 1 May 2026 to 30 Jun 2026 | £375 |
| 3 to 6 months late | 1 Jul 2026 to 30 Sep 2026 | £750 |
| More than 6 months late | From 1 Oct 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2026 | £200 |
| 3 months late | 30 Sep 2026 | another £200 |
| 6 months late | 30 Dec 2026 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 2027 | 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
- 14183178
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 June 2022 (4 years ago)
- Registered office
- Flat 32 Dawes House, Orb Street, London, SE17 1RE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2024
- Last confirmation statement
- 19 June 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.
- MJ Plumbing and Heating Ltd2018
- MJF Heating Ltd2021
- MJW Heating Ltd2025
- MK Plumbing & Gas Limited2026
- MKF Plumbing Limited2026
- ML Biomass Ltd2025
- ML Gas Services Ltd2017
- ML Plumbing & Pipefitting Services Ltd2019
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are MJ Plumber and Heating Ltd's accounts due?
MJ Plumber and Heating Ltd's accounts were due at Companies House on 31 March 2026 and the register shows them as overdue.
When is MJ Plumber and Heating Ltd's CT600 due?
The CT600 for the period to 30 June 2025 is due at HMRC by 30 June 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2026.
Is MJ Plumber and Heating Ltd still trading?
MJ Plumber and Heating 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 MJ Plumber and Heating Ltd do?
MJ Plumber and Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MJ Plumber and Heating Ltd?
MJ Plumber and Heating Ltd was incorporated on 20 June 2022, 4 years ago.
Who runs MJ Plumber and Heating Ltd?
MJ Plumber and Heating Ltd has 1 active director, the longest-serving appointed in Jun 2022. Their names and service addresses are on the Companies House register.
Who owns MJ Plumber and Heating Ltd?
One person or company has significant control of MJ Plumber and Heating Ltd: an individual (owns 75% or more of the shares).
What is the penalty if MJ Plumber and Heating 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 MJ Plumber and Heating 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.