- Companies
- Plumbers and heating engineers
- Portsmouth
- Watertight Pipework Limited
Watertight Pipework Limited
- Company number
- 04167610
- Incorporated
- 23 Feb 200125 years trading
- Registered office
- Suite 1 Ground Floor, 4 Quay Point, Northarbour Road, Portsmouth, PO6 3TD
- Nature of business
- Plumbing, heat and air-conditioning installation
Watertight Pipework Limited is a 25-year-old private limited company registered in Portsmouth, company number 04167610, one of 141 plumbing and heating companies in Portsmouth. Its next accounts are due at Companies House on 30 November 2027, and the CT600 for the period to 28 February 2027 is due at HMRC on 28 February 2028.
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 £72K (-12.9%) on the year before, to £488K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £456K against £34K owed within a year: more than 10 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2026 | £488K | £441K | £456K | £34K | 2 |
| 28 Feb 2025 | £559K | £486K | £549K | £75K | 2 |
| 29 Feb 2024 | £493K | £430K | £526K | £88K | 2 |
| 28 Feb 2023 | £413K | £345K | £472K | £127K | 0 |
| 28 Feb 2022 | £323K | £221K | £373K | £140K | 3 |
| 28 Feb 2021 | £267K | £246K | £343K | £114K | 3 |
| 29 Feb 2020 | £221K | £164K | £348K | £141K | 3 |
| 28 Feb 2019 | £164K | £117K | £252K | £105K | |
| 28 Feb 2018 | £186K | £157K | £277K | £102K | 3 |
| 28 Feb 2017 | £134K | £85K | £203K | £84K | 3 |
Where Watertight Pipework Limited is registered
The registered office is in Portsmouth (PO6), in the Portsmouth local authority area, South East. Show PO6 3TD on a map.
Other trade companies in PO6
- Bellagio Partners LtdBuilders
- Cpenw LtdMachinery repair and installation
- Marla Brickwork & Construction LtdProperty developers
- Miracles in Metal LtdMechanics and garages
- FH Fire & Electrical LtdElectricians
- Thomcore LimitedSpecialist contractors
- JMS Southern LtdElectricians
- The Motum Group LtdSpecialist contractors
Shared registered office
63 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 Watertight Pipework 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 30 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2027 to 31 Dec 2027 | £150 |
| 1 to 3 months late | 1 Jan 2028 to 29 Feb 2028 | £375 |
| 3 to 6 months late | 1 Mar 2028 to 31 May 2028 | £750 |
| More than 6 months late | From 1 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 2029 | 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
- 04167610
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 February 2001 (25 years ago)
- Registered office
- Suite 1 Ground Floor, 4 Quay Point, Northarbour Road, Portsmouth, PO6 3TD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2026
- Last confirmation statement
- 23 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 in Portsmouth
Other active plumbing and heating companies registered in Portsmouth.
- Whiteley Gas Services Ltd2007
- A Rated Boilers Limited2010
- A&P Bul Ltd2021
- Ab Electronics Limited2026
- Abs Heating UK Limited2006
- Acci Maintenance Ltd2025
- Af Plumbing Limited2022
- All About Gas, Heating and Plumbing Services Limited2007
All plumbing and heating companies in Portsmouth · All trades in Portsmouth · Plumbers and heating engineers across the UK
Frequently asked questions
When are Watertight Pipework Limited's accounts due?
Watertight Pipework Limited's next accounts are due at Companies House by 30 November 2027 (in 413 days), covering the period to 28 February 2027.
When is Watertight Pipework Limited's CT600 due?
The CT600 for the period to 28 February 2027 is due at HMRC by 28 February 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2027.
Is Watertight Pipework Limited still trading?
Watertight Pipework 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 Watertight Pipework Limited do?
Watertight Pipework Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Watertight Pipework Limited?
Watertight Pipework Limited was incorporated on 23 February 2001, 25 years ago.
What is the penalty if Watertight Pipework 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 Watertight Pipework 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.