- Companies
- Plumbers and heating engineers
- Merthyr Tydfil
- Flow Taenellwyr Tan Ltd
Flow Taenellwyr Tan Ltd
- Company number
- 10642138
- Incorporated
- 28 Feb 20179 years trading
- Registered office
- Unit B5, Merthyr Enterprise Centre Merthyr Tydfil Industrial Park, Pentrebach, Merthyr Tydfil, CF48 4DR
- Nature of business
- Plumbing, heat and air-conditioning installation
Flow Taenellwyr Tan Ltd is a 9-year-old private limited company registered in Merthyr Tydfil, company number 10642138, one of 21 plumbing and heating companies in Merthyr Tydfil. 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 down £32K (-97.6%) on the year before, to £779.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- Current assets of £110K against £58K owed within a year: 1.9 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £779 | £110K | £58K | 1 | |
| 30 Apr 2024 | £33K | £106K | £50K | 1 | |
| 28 Feb 2023 | £31K | £96K | £32K | 1 | |
| 28 Feb 2022 | £18K | £74K | £30K | 1 | |
| 28 Feb 2021 | -£1,702 | £51K | £17K | 1 | |
| 29 Feb 2020 | £568 | £14K | £31K | 2 | |
| 28 Feb 2019 | £108 | £15K | £22K | 2 |
Where Flow Taenellwyr Tan Ltd is registered
The registered office is in Merthyr Tydfil (CF48), in the Merthyr Tydfil local authority area, Wales. Show CF48 4DR on a map.
Other trade companies in CF48
- Valley Roofing Building & Carpentry LimitedRoofers
- Ajl Rail/Civil Engineering LtdCivil engineering
- M&K Valeting LtdCleaning companies
- Mdgroundworks LtdGroundworks and demolition
- Craig Lloyd Groundworks LtdCivil engineering
- Noarc Electrical LtdElectricians
- Elt Brickwork LimitedBuilders
- JBH Decorating LimitedPainters and decorators
What happens if Flow Taenellwyr Tan 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
- 10642138
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 February 2017 (9 years ago)
- Registered office
- Unit B5, Merthyr Enterprise Centre Merthyr Tydfil Industrial Park, Pentrebach, Merthyr Tydfil, CF48 4DR
- 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
- 27 February 2026
- Previous names
- Blaze Taenellwyr Tan Ltd (until 23 Jul 2018)
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 Merthyr Tydfil
Other active plumbing and heating companies registered in Merthyr Tydfil.
- G&S Heating Services Limited2014
- Galaxy Plumbing and Property Maintenance Ltd2016
- Heat Vision Ltd2024
- Heatflo Ltd2026
- Heathome (UK) Limited2014
- J Williams Heating and Plumbing Ltd2023
- Jenkins Heating Ltd2025
- Karl Jones Plumbing & Heating Services Limited2004
All plumbing and heating companies in Merthyr Tydfil · All trades in Merthyr Tydfil · Plumbers and heating engineers across the UK
Frequently asked questions
When are Flow Taenellwyr Tan Ltd's accounts due?
Flow Taenellwyr Tan Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is Flow Taenellwyr Tan 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 Flow Taenellwyr Tan Ltd still trading?
Flow Taenellwyr Tan 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 Flow Taenellwyr Tan Ltd do?
Flow Taenellwyr Tan Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Flow Taenellwyr Tan Ltd?
Flow Taenellwyr Tan Ltd was incorporated on 28 February 2017, 9 years ago.
What is the penalty if Flow Taenellwyr Tan 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 Flow Taenellwyr Tan 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.