- Companies
- Plumbers and heating engineers
- Cardiff
- GT Underfloor Heating Limited
GT Underfloor Heating Limited
- Company number
- 12703295
- Incorporated
- 29 Jun 20206 years trading
- Registered office
- 131 Johnston Road, Llanishen, Cardiff, CF14 5HJ
- Nature of business
- Plumbing, heat and air-conditioning installation; Wholesale of hardware, plumbing and heating equipment and supplies
GT Underfloor Heating Limited is a 6-year-old private limited company registered in Cardiff, company number 12703295, one of 170 plumbing and heating companies in Cardiff. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £14K (-81.6%) on the year before, to £3,204.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £3,204 | £0 | £763 | 1 | |
| 30 Jun 2024 | £17K | £13K | £4,495 | 1 | |
| 30 Jun 2023 | £34K | £76K | £54K | 1 | |
| 30 Jun 2022 | £2,017 | £3,752 | £20K | 1 | |
| 30 Jun 2021 | £1,682 | £794 | £1,710 | 1 |
Where GT Underfloor Heating Limited is registered
The registered office is in Cardiff (CF14), in the Cardiff local authority area, Wales. Show CF14 5HJ 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 GT Underfloor Heating 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 12703295
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 June 2020 (6 years ago)
- Registered office
- 131 Johnston Road, Llanishen, Cardiff, CF14 5HJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Wholesale of hardware, plumbing and heating equipment and supplies (SIC 46740) - Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 10 April 2026
- Previous names
- Easy Ufh Limited (until 21 Jul 2023)
Think Smart NRG Limited (until 28 Jul 2020)
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.
- H.Herbert Plumbing Services Ltd2022
- H20 Plumbing 'N' Heating Limited2018
- Ha Construction Works Ltd2026
- Heat Elite Cardiff Ltd2024
- Heat Safe Cardiff Ltd2018
- Heat Tec SW Ltd2021
- Heatcare (Cardiff) Ltd2013
- Hewett Heating & Plumbing Ltd2012
All plumbing and heating companies in Cardiff · All trades in Cardiff · Plumbers and heating engineers across the UK
Frequently asked questions
When are GT Underfloor Heating Limited's accounts due?
GT Underfloor Heating Limited's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is GT Underfloor Heating Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is GT Underfloor Heating Limited still trading?
GT Underfloor Heating 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 GT Underfloor Heating Limited do?
GT Underfloor Heating Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Wholesale of hardware, plumbing and heating equipment and supplies (SIC 46740).
How old is GT Underfloor Heating Limited?
GT Underfloor Heating Limited was incorporated on 29 June 2020, 6 years ago.
What is the penalty if GT Underfloor Heating 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 GT Underfloor Heating 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.