- Companies
- Plumbers and heating engineers
- Bexley
- Watertight Plumbing & Heating Limited
Watertight Plumbing & Heating Limited
- Company number
- 10142366
- Incorporated
- 22 Apr 201610 years trading
- Registered office
- 12 Old Bexley Lane, Bexley, DA5 2BN
- Nature of business
- Plumbing, heat and air-conditioning installation
Watertight Plumbing & Heating Limited is a 10-year-old private limited company registered in Bexley, company number 10142366, one of 81 plumbing and heating companies in Bexley. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 £20K (+89.1%) on the year before, to £43K.
- Net assets rose in 4 of 8 year-on-year comparisons on record.
- Current assets of £55K against £13K owed within a year: 4.2 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £43K | £10K | £55K | £13K | 2 |
| 30 Apr 2024 | £23K | £723 | £29K | £7,361 | 2 |
| 30 Apr 2023 | £37K | £1,080 | £47K | £11K | 2 |
| 30 Apr 2022 | £21K | £378 | £30K | £9,883 | 2 |
| 30 Apr 2021 | £9,736 | £3,994 | £21K | £13K | 2 |
| 30 Apr 2020 | £3,010 | £4,186 | £26K | £25K | 2 |
| 30 Apr 2019 | £3,173 | £3,493 | £15K | £14K | 2 |
| 30 Apr 2018 | £3,292 | £4,683 | £17K | £17K | 2 |
| 30 Apr 2017 | £3,751 | £4,440 | £16K | £16K | 1 |
Where Watertight Plumbing & Heating Limited is registered
The registered office is in Bexley (DA5), in the Dartford local authority area, South East. Show DA5 2BN on a map.
Other trade companies in DA5
- Homeheat+ LtdPlumbers and heating engineers
- Apex South West Construction LtdBuilders
- E & F Surfacing & Construction LtdSpecialist contractors
- T&R Cleaning Services LtdCleaning companies
- Paul C Jordan LimitedBuilders
- SX Plumbing LimitedPlumbers and heating engineers
- Rennell Interiors LtdJoiners and carpenters
- Ravenford Planning LtdProperty developers
Shared registered office
26 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 Plumbing & Heating 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 10142366
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 April 2016 (10 years ago)
- Registered office
- 12 Old Bexley Lane, Bexley, DA5 2BN
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 13 November 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 Bexley
Other active plumbing and heating companies registered in Bexley.
- A L Haine Plumbing & Heating Limited2012
- Ade Gas & Heating Services Limited2017
- Airsense Mechanical Services Limited2017
- All Gas Maintenance Agm Limited2018
- Allen&Co Plumbing and Heating Services Ltd2019
- Ambassador Insulations (London) Limited2019
- B Frodsham Plumbing Limited2025
- B Ingham Plumbing & Heating Limited2009
All plumbing and heating companies in Bexley · All trades in Bexley · Plumbers and heating engineers across the UK
Frequently asked questions
When are Watertight Plumbing & Heating Limited's accounts due?
Watertight Plumbing & Heating Limited's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is Watertight Plumbing & Heating Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Watertight Plumbing & Heating Limited still trading?
Watertight Plumbing & Heating 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 Plumbing & Heating Limited do?
Watertight Plumbing & Heating Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Watertight Plumbing & Heating Limited?
Watertight Plumbing & Heating Limited was incorporated on 22 April 2016, 10 years ago.
What is the penalty if Watertight Plumbing & Heating 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 Plumbing & Heating 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.