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- Plumbers and heating engineers
- Cardiff
- Stoneflow U.K. Ltd
Company profile · Plumbers and heating engineers
Stoneflow U.K. Ltd
Stoneflow U.K. Ltd is a 9-year-old private limited company registered in Cardiff, company number 10565175, one of 170 plumbing and heating companies in Cardiff. 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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Financial snapshot, 2025
From the balance sheet at 30 April 2025, as filed at Companies House.
Stoneflow U.K. Ltd over the years
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 £13K (+128.1%) on the year before, to £2,921.
- Net assets rose in 3 of 7 year-on-year comparisons on record.
- Current assets of £6,560 against £9,340 owed within a year: 0.7 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £2,921 | £6,560 | £9,340 | 1 | |
| 30 Apr 2024 | -£10K | £6,295 | £15K | 2 | |
| 30 Apr 2023 | -£637 | £18K | £14K | 2 | |
| 30 Apr 2022 | -£5,473 | £23K | £17K | 1 | |
| 30 Apr 2021 | £3,085 | £40K | £24K | 1 | |
| 30 Apr 2020 | £9,996 | £27K | £28K | 1 | |
| 31 Jan 2019 | £838 | £8,897 | £22K | ||
| 31 Jan 2018 | £9,599 |
Where Stoneflow U.K. Ltd is registered
The registered office is in Cardiff (CF14), in the Cardiff local authority area, Wales. Show CF14 0GE on a map.
Other trade companies in CF14
- Velren Group LtdProperty developers
- Premierroofcare LtdRoofers
- JLG Groundworks LtdCleaning companies
- Tidyvibz LtdCleaning companies
- Ayyappa MTD LtdBuilders
- KM Phoenix Pond, Garden & General Maintenance LtdLandscapers and gardeners
- Eco Green Property Service LtdFinishing trades
- S and J Accident Repairs LtdPainters and decorators
What happens if Stoneflow U.K. 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 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
- 10565175
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 January 2017 (9 years ago)
- Registered office
- 5 Jade Close, Lisvane, Cardiff, CF14 0GE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 15 January 2026
- Previous names
- Stoneflow Plumbing Heating & Renewables Ltd (until 25 Mar 2017)
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 Cardiff
Other active plumbing and heating companies registered in Cardiff.
- Suiteheat Cardiff Ltd2025
- Sweet Heat Plumbing & Heating Limited2025
- TCB Construction Cardiff Ltd2025
- TFP Heating & Plumbing Limited2019
- Tga Plumbing and Heating Solutions (Cardiff) Ltd2025
- The Plumb CLWB Ltd2024
- Total Plumbing Ltd2026
- True Temperature Solutions Ltd2025
All plumbing and heating companies in Cardiff · All trades in Cardiff · Plumbers and heating engineers across the UK
Frequently asked questions
When are Stoneflow U.K. Ltd's accounts due?
Stoneflow U.K. Ltd's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is Stoneflow U.K. Ltd'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 Stoneflow U.K. Ltd still trading?
Stoneflow U.K. 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 Stoneflow U.K. Ltd do?
Stoneflow U.K. Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Stoneflow U.K. Ltd?
Stoneflow U.K. Ltd was incorporated on 16 January 2017, 9 years ago.
What is the penalty if Stoneflow U.K. 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 Stoneflow U.K. 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.