H2O Gas Ltd
- Company number
- 10019696
- Incorporated
- 22 Feb 201610 years trading
- Registered office
- 16 Grasgarth Close, London, W3 9HS
- Nature of business
- Plumbing, heat and air-conditioning installation
H2O Gas Ltd is a 10-year-old private limited company registered in London, company number 10019696, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 25 November 2026, and the CT600 for the period to 25 February 2026 is due at HMRC on 25 February 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 down £3,059 (-35.6%) on the year before, to £5,542.
- Net assets rose in 4 of 8 year-on-year comparisons on record.
- Current assets of £40K against £27K owed within a year: 1.5 times cover.
- 3 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 |
|---|---|---|---|---|---|
| 28 Feb 2025 | £5,542 | £40K | £27K | 3 | |
| 29 Feb 2024 | £8,601 | £37K | £25K | 3 | |
| 28 Feb 2023 | £11K | £43K | £32K | 3 | |
| 28 Feb 2022 | £3,889 | £26K | £28K | 3 | |
| 28 Feb 2021 | £3,497 | £75K | £30K | 3 | |
| 29 Feb 2020 | £4,518 | £22K | £26K | 4 | |
| 28 Feb 2019 | £13K | £32K | £32K | 4 | |
| 28 Feb 2018 | £11K | £42K | £32K | 4 | |
| 28 Feb 2017 | £1,992 | £19K | £18K |
Where H2O Gas Ltd is registered
The registered office is in London (W3), in the Ealing local authority area, London. Show W3 9HS on a map.
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What happens if H2O Gas 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 25 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 Nov 2026 to 25 Dec 2026 | £150 |
| 1 to 3 months late | 26 Dec 2026 to 25 Feb 2027 | £375 |
| 3 to 6 months late | 26 Feb 2027 to 25 May 2027 | £750 |
| More than 6 months late | From 26 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 26 Feb 2027 | £200 |
| 3 months late | 25 May 2027 | another £200 |
| 6 months late | 25 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 25 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
- 10019696
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 February 2016 (10 years ago)
- Registered office
- 16 Grasgarth Close, London, W3 9HS
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 25 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 30 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 London
Other active plumbing and heating companies registered in London.
- H2O Surrey Quays Limited2013
- H2Owen Ltd2020
- Ha Enterprises London Ltd2018
- Ha Plumbing Ltd2026
- Haas Plumbing and Heating Services Ltd2025
- Habitat Realtors Ltd2024
- Hackney Boiler Repairs Ltd2016
- Hackney Heating Ltd2019
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are H2O Gas Ltd's accounts due?
H2O Gas Ltd's next accounts are due at Companies House by 25 November 2026 (in 43 days), covering the period to 25 February 2026.
When is H2O Gas Ltd's CT600 due?
The CT600 for the period to 25 February 2026 is due at HMRC by 25 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 26 November 2026.
Is H2O Gas Ltd still trading?
H2O Gas 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 H2O Gas Ltd do?
H2O Gas Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is H2O Gas Ltd?
H2O Gas Ltd was incorporated on 22 February 2016, 10 years ago.
What is the penalty if H2O Gas 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 H2O Gas 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.