- Companies
- Plumbers and heating engineers
- MJ Carolan Plumbing & Heating Ltd
MJ Carolan Plumbing & Heating Ltd
- Company number
- 11809155
- Incorporated
- 6 Feb 20197 years trading
- Registered office
- Lauren House, 37A Wakefield Road, Fenay Bridge, West Yorkshire, Huddersfield, HD5 0AN
- Nature of business
- Plumbing, heat and air-conditioning installation
MJ Carolan Plumbing & Heating Ltd is a 7-year-old private limited company registered in West Yorkshire, Huddersfield, company number 11809155, one of the UK's plumbing and heating companies. 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 £5,925 (+30.1%) on the year before, to £26K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £32K against £7,762 owed within a year: 4.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2020 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £26K | £32K | £7,762 | 1 | |
| 31 Mar 2025 | £20K | £24K | £6,357 | 1 | |
| 31 Mar 2024 | £5,236 | £4,985 | £9,910 | £7,589 | 1 |
| 31 Mar 2023 | £12K | £11K | £16K | £7,486 | 1 |
| 31 Mar 2022 | £25K | £4,603 | £28K | £7,535 | 1 |
| 31 Mar 2021 | £30K | £28K | £34K | £8,581 | 1 |
| 31 Mar 2020 | £23K | £21K | £26K | £9,082 | 1 |
Where MJ Carolan Plumbing & Heating Ltd is registered
The registered office is in West Yorkshire, Huddersfield (HD5), in the Kirklees local authority area, Yorkshire and The Humber. Show HD5 0AN on a map.
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Also registered at this address
8 other companies use the same registered office as MJ Carolan Plumbing & Heating Ltd.
- Adam’S Carpet Cleaning LtdCleaning companies
- Gorilla Home Improvements LtdInstallers
- Hinchy's LtdBuilders
- J & T Commercials LtdMachinery repair and installation
- J1 Automotive LtdMechanics and garages
- Jenks Granite & Quartz LtdInstallers
- Paul Radcliffe Design LtdRepair services
- Pawson Joinery LtdJoiners and carpenters
What happens if MJ Carolan Plumbing & Heating 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
- 11809155
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 February 2019 (7 years ago)
- Registered office
- Lauren House, 37A Wakefield Road, Fenay Bridge, West Yorkshire, Huddersfield, HD5 0AN
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 5 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
Other active plumbing and heating companies.
Frequently asked questions
When are MJ Carolan Plumbing & Heating Ltd's accounts due?
MJ Carolan Plumbing & Heating Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is MJ Carolan Plumbing & Heating 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 MJ Carolan Plumbing & Heating Ltd still trading?
MJ Carolan Plumbing & Heating 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 MJ Carolan Plumbing & Heating Ltd do?
MJ Carolan Plumbing & Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MJ Carolan Plumbing & Heating Ltd?
MJ Carolan Plumbing & Heating Ltd was incorporated on 6 February 2019, 7 years ago.
What is the penalty if MJ Carolan Plumbing & 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 Carolan Plumbing & Heating 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.