- Companies
- Plumbers and heating engineers
- Water Mains Engineering UK Ltd
Water Mains Engineering UK Ltd
- Company number
- 16240665
- Incorporated
- 10 Feb 20251 year trading
- Registered office
- Riverbank House, 1 Putney Bridge Approach, Fulham, SW6 3JD
- Nature of business
- Plumbing, heat and air-conditioning installation
Water Mains Engineering UK Ltd is a 1-year-old private limited company registered in Fulham, company number 16240665, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 10 November 2026, and its first CT600 is due at HMRC on 9 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 Water Mains Engineering UK Ltd is registered
The registered office is in Fulham (SW6), in the Hammersmith and Fulham local authority area, London. Show SW6 3JD on a map.
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- Earthcom LtdBuilders
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- Catteau Cosntruction LtdInstallers
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Also registered at this address
11 other companies use the same registered office as Water Mains Engineering UK Ltd.
- Brightfix Property Maintenance LtdRepair services
- Daddy Electrician LtdBuilders
- Grandiem LimitedProperty developers
- K&C Carpentry & Joinery LtdRepair services
- Kluk Construction LtdPlasterers
- London Roofing and Damp Proofing LtdRoofers
- RKK Infinity Projects LtdInstallers
- Segment Property Services LimitedFinishing trades
- SM Fulham Builders LtdBuilders
- The Modish Group LtdSpecialist contractors
- Timelesswheels LimitedMotor traders
What happens if Water Mains Engineering UK 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 10 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Nov 2026 to 10 Dec 2026 | £150 |
| 1 to 3 months late | 11 Dec 2026 to 10 Feb 2027 | £375 |
| 3 to 6 months late | 11 Feb 2027 to 10 May 2027 | £750 |
| More than 6 months late | From 11 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
- 16240665
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 February 2025 (1 year ago)
- Registered office
- Riverbank House, 1 Putney Bridge Approach, Fulham, SW6 3JD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 12 March 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 Water Mains Engineering UK Ltd's accounts due?
Water Mains Engineering UK Ltd's next accounts are due at Companies House by 10 November 2026 (in 28 days), covering the period to 28 February 2026.
When is Water Mains Engineering UK 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 9 February 2026, due by 9 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 Water Mains Engineering UK Ltd still trading?
Water Mains Engineering UK 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 Water Mains Engineering UK Ltd do?
Water Mains Engineering UK Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Water Mains Engineering UK Ltd?
Water Mains Engineering UK Ltd was incorporated on 10 February 2025, 1 year ago.
What is the penalty if Water Mains Engineering UK 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 Water Mains Engineering UK 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.