- Companies
- Plumbers and heating engineers
- Pontypridd
- H20 Building Services Limited
H20 Building Services Limited
- Company number
- 10134811
- Incorporated
- 20 Apr 201610 years trading
- Registered office
- Unit 1 Maritime Workshops, Maritime Industrial Estate, Pontypridd, Rct, CF37 1NY
- Nature of business
- Plumbing, heat and air-conditioning installation
H20 Building Services Limited is a 10-year-old private limited company registered in Pontypridd, company number 10134811, one of 37 plumbing and heating companies in Pontypridd. 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.
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 H20 Building Services LimitedOr 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 up £25K (+8.9%) on the year before, to £301K.
- Net assets rose in 5 of 7 year-on-year comparisons on record.
- Current assets of £1.4M against £1.1M owed within a year: 1.2 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 | £301K | £290K | £1.4M | £1.1M | 0 |
| 30 Apr 2024 | £276K | £29K | £948K | £691K | 6 |
| 30 Apr 2023 | £268K | £80K | £1.3M | £1.1M | 5 |
| 30 Apr 2022 | £282K | £29K | £1.3M | £1M | 3 |
| 30 Apr 2021 | £384K | £87K | £922K | £519K | 3 |
| 30 Apr 2020 | £175K | £66K | £278K | £110K | 3 |
| 30 Apr 2019 | £140K | £92K | £582K | £443K | |
| 30 Apr 2018 | £28K | £67K | £198K | £171K | |
| 30 Apr 2017 | £21K |
Where H20 Building Services Limited is registered
The registered office is in Pontypridd (CF37), in the Rhondda Cynon Taf local authority area, Wales. Show CF37 1NY on a map.
Other trade companies in CF37
- Hamilton Motor Group LtdMotor traders
- Pencoed Building Services LtdSpecialist contractors
- Pyo Property Developments LimitedBuilders
- Great Choice Leisure Vehicles LimitedMotor traders
- C2 Interior Contractors LtdBuilders
- Carpet Mine LtdFinishing trades
- LCH4RP LtdProperty developers
- LCH4Est LtdProperty developers
Also registered at this address
1 other company uses the same registered office as H20 Building Services Limited.
- Maxim Sprinkler Systems LimitedInstallers
What happens if H20 Building Services 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
- 10134811
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 April 2016 (10 years ago)
- Registered office
- Unit 1 Maritime Workshops, Maritime Industrial Estate, Pontypridd, Rct, CF37 1NY
- 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
- 24 July 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 Pontypridd
Other active plumbing and heating companies registered in Pontypridd.
- Haul Installations Cyf2026
- Ionic Plumbing & Heating Limited2020
- J M G Plumbing Limited2012
- JJ & S Plumbing and Heating Ltd2024
- JLK Plumbing and Bathroom Services Limited2026
- Keith Bundy Heating Limited2014
- MTH Heating Limited2011
- Multi Choice Plumbing Ltd2023
All plumbing and heating companies in Pontypridd · All trades in Pontypridd · Plumbers and heating engineers across the UK
Frequently asked questions
When are H20 Building Services Limited's accounts due?
H20 Building Services 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 H20 Building Services 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 H20 Building Services Limited still trading?
H20 Building Services 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 H20 Building Services Limited do?
H20 Building Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is H20 Building Services Limited?
H20 Building Services Limited was incorporated on 20 April 2016, 10 years ago.
What is the penalty if H20 Building Services 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 H20 Building Services 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.