MR H2O Ltd
- Company number
- 08833148
- Incorporated
- 6 Jan 201412 years trading
- Registered office
- Allen House, Westmead Road, Sutton, SM1 4LA
- Nature of business
- Plumbing, heat and air-conditioning installation
MR H2O Ltd is a 12-year-old private limited company registered in Sutton, company number 08833148, one of 114 plumbing and heating companies in Sutton. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for MR H2O LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £15 (-6.2%) on the year before, to £226.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £50K against £44K owed within a year: 1.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £226 | £50K | £44K | 1 | |
| 31 Mar 2024 | £241 | £46K | £37K | 1 | |
| 31 Mar 2023 | £162 | £27K | £19K | 1 | |
| 31 Mar 2022 | £151 | £14K | £17K | £6,183 | 0 |
| 31 Mar 2021 | £102 | £6,855 | £9,640 | £1,284 | 0 |
| 31 Mar 2020 | £13K | £15K | £18K | £5,178 | 0 |
| 31 Mar 2019 | £11K | £14K | £18K | £6,378 | 0 |
| 31 Mar 2018 | £418 | £3,400 | £4,477 | £4,059 | 0 |
| 31 Mar 2017 | £100 | 0 | |||
| 31 Mar 2016 | £100 | 0 |
Where MR H2O Ltd is registered
The registered office is in Sutton (SM1), in the Sutton local authority area, London. Show SM1 4LA on a map.
Other trade companies in SM1
- GML Landscaping & Tree Care LtdLandscapers and gardeners
- Alfa Sprint LtdMechanics and garages
- Roadside Help LtdMotor traders
- Pivotal Cleaning LtdCleaning companies
- Patchs Builder LimitedFinishing trades
- Leo Windows LimitedGlaziers
- MJG Motorworks LtdMechanics and garages
- Macgregor Landscapes and Gardens LtdLandscapers and gardeners
Shared registered office
34 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 MR H2O 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 08833148
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 January 2014 (12 years ago)
- Registered office
- Allen House, Westmead Road, Sutton, SM1 4LA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 16 December 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 Sutton
Other active plumbing and heating companies registered in Sutton.
- Mulgrave Heating Limited2003
- Muneris Limited2009
- Myk Plumbing and Heating Services Ltd2025
- Nexus Group Limited2020
- Nexus Mechanical Ltd2018
- Nexus Mechanical Maintenance Ltd2019
- One Touch Plumbing and Heating Limited2019
- Optimize Plumbing & Heating Ltd.2016
All plumbing and heating companies in Sutton · All trades in Sutton · Plumbers and heating engineers across the UK
Frequently asked questions
When are MR H2O Ltd's accounts due?
MR H2O Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is MR H2O Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is MR H2O Ltd still trading?
MR H2O 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 MR H2O Ltd do?
MR H2O Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MR H2O Ltd?
MR H2O Ltd was incorporated on 6 January 2014, 12 years ago.
What is the penalty if MR H2O 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 MR H2O 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.