- Companies
- Plumbers and heating engineers
- London
- MJW Heating Ltd
MJW Heating Ltd
- Company number
- 16261040
- Incorporated
- 18 Feb 20251 year trading
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Plumbing, heat and air-conditioning installation
MJW Heating Ltd is a 1-year-old private limited company registered in London, company number 16261040, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 18 November 2026, and its first CT600 is due at HMRC on 17 February 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where MJW Heating Ltd is registered
The registered office is in London (EC1V), in the Islington local authority area, London. Show EC1V 2NX on a map.
Other trade companies in EC1V
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- Pronto Roofing and Construction LtdRoofers
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- J&R Partners LtdBuilders
- The Tile Craft LtdFinishing trades
- Cathal Od Solutions LtdSpecialist contractors
Shared registered office
2,436 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if MJW 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 18 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 19 Nov 2026 to 18 Dec 2026 | £150 |
| 1 to 3 months late | 19 Dec 2026 to 18 Feb 2027 | £375 |
| 3 to 6 months late | 19 Feb 2027 to 18 May 2027 | £750 |
| More than 6 months late | From 19 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 16261040
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 February 2025 (1 year ago)
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
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.
- MK Plumbing & Gas Limited2026
- MKF Plumbing Limited2026
- ML Biomass Ltd2025
- ML Gas Services Ltd2017
- ML Plumbing & Pipefitting Services Ltd2019
- MM Plumbing, Heating & Property Services Ltd2012
- MMJ Heating Limited2012
- MML Plumbing Ltd2020
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are MJW Heating Ltd's accounts due?
MJW Heating Ltd's next accounts are due at Companies House by 18 November 2026 (in 37 days), covering the period to 28 February 2026.
When is MJW Heating Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 17 February 2026, due by 17 February 2027, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is MJW Heating Ltd still trading?
MJW Heating Ltd is listed as active on the Companies House register (checked 12 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 MJW Heating Ltd do?
MJW Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MJW Heating Ltd?
MJW Heating Ltd was incorporated on 18 February 2025, 1 year ago.
What is the penalty if MJW 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 MJW Heating Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.