- Companies
- Plumbers and heating engineers
- Carmarthen
- Ynni Heating Ltd
Ynni Heating Ltd
- Company number
- 14572094
- Incorporated
- 5 Jan 20233 years trading
- Registered office
- 11 Brewery Road, Carmarthen, SA31 1TB
- Nature of business
- Plumbing, heat and air-conditioning installation
Ynni Heating Ltd is a 3-year-old private limited company registered in Carmarthen, company number 14572094, one of 30 plumbing and heating companies in Carmarthen. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 up £535 (+6.3%) on the year before, to £8,984.
- Current assets of £14K against £6,297 owed within a year: 2.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £8,984 | £14K | £6,297 | 1 | |
| 31 Jan 2024 | £8,449 | £15K | £5,199 | 1 |
Where Ynni Heating Ltd is registered
The registered office is in Carmarthen (SA31), in the Carmarthenshire local authority area, Wales. Show SA31 1TB on a map.
Other trade companies in SA31
- Revworks Studio LtdMechanics and garages
- Celf Construction LimitedPlasterers
- DCM Plant Hire LimitedSpecialist contractors
- M Owen Construction LtdBuilders
- Tce Construction LtdBuilders
- LW Pro Build LtdBuilders
- PW Solar LtdElectricians
- Mark Williams Carpets LimitedFloor and wall tilers
Also registered at this address
1 other company uses the same registered office as Ynni Heating Ltd.
- Amgen Heating LtdPlumbers and heating engineers
What happens if Ynni Heating 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 14572094
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 January 2023 (3 years ago)
- Registered office
- 11 Brewery Road, Carmarthen, SA31 1TB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 4 January 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 Carmarthen
Other active plumbing and heating companies registered in Carmarthen.
- A Perry Plumbing and Heating Ltd2026
- Aled Evans Plumbing & Heating Ltd.2025
- Amgen Heating Ltd2023
- Ark Plumbing Ltd2023
- Birdshill Biomass Ltd.2015
- Carmarthen Refrigeration Limited2003
- Chaps (HPS) Wales Ltd2021
- Craig Powell Limited2026
All plumbing and heating companies in Carmarthen · All trades in Carmarthen · Plumbers and heating engineers across the UK
Frequently asked questions
When are Ynni Heating Ltd's accounts due?
Ynni Heating Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Ynni Heating Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Ynni Heating Ltd still trading?
Ynni Heating 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 Ynni Heating Ltd do?
Ynni Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Ynni Heating Ltd?
Ynni Heating Ltd was incorporated on 5 January 2023, 3 years ago.
What is the penalty if Ynni Heating 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 Ynni Heating 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.