- Companies
- Plumbers and heating engineers
- Doncaster
- Tna Plumbing and Heating Ltd
Tna Plumbing and Heating Ltd
- Company number
- 11745156
- Incorporated
- 31 Dec 20187 years trading
- Registered office
- 40 Chestnut Avenue, Chestnut Avenue, Doncaster, DN2 5SP
- Nature of business
- Plumbing, heat and air-conditioning installation
Tna Plumbing and Heating Ltd is a 7-year-old private limited company registered in Doncaster, company number 11745156, one of 150 plumbing and heating companies in Doncaster. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £17K (+69.1%) on the year before, to £42K.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- 2 employees 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 |
|---|---|---|---|---|---|
| 31 Dec 2025 | £42K | £62K | £25K | 2 | |
| 31 Dec 2024 | £25K | £30K | £9,599 | 2 | |
| 31 Dec 2023 | £14K | £30K | £11K | 3 | |
| 31 Dec 2022 | £1,080 | £13K | £3,775 | 3 | |
| 31 Dec 2021 | -£9,551 | £3,616 | £2,347 | 3 | |
| 31 Dec 2020 | -£1,566 | £16K | £2,384 | 2 | |
| 31 Dec 2019 | £1,020 | £2,872 | £1,852 | 2 |
Where Tna Plumbing and Heating Ltd is registered
The registered office is in Doncaster (DN2), in the Doncaster local authority area, Yorkshire and The Humber. Show DN2 5SP on a map.
Other trade companies in DN2
- Zerze Family Properties LtdProperty developers
- Arqstone Developments LtdProperty developers
- Zych Enterprise LtdBuilders
- Hardwick & Stone LimitedProperty developers
- Gorecka LtdMechanics and garages
- Stonecaster LtdMotor traders
- JRSH Autos LtdMotor traders
- Head New Build Cleaning LtdCleaning companies
What happens if Tna Plumbing and 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 11745156
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 December 2018 (7 years ago)
- Registered office
- 40 Chestnut Avenue, Chestnut Avenue, Doncaster, DN2 5SP
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 30 December 2025
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 Doncaster
Other active plumbing and heating companies registered in Doncaster.
- Total HVAC Limited2026
- U and I Servicing Limited2024
- Under Floor Heating Supply Limited2012
- Unvented Cylinder Specialist Ltd2018
- Vectis Infrastructures Ltd2026
- Vulcan Plumbing & Heating Limited2017
- Wheatley Heating and Plumbing Solutions Ltd2026
- Winfrow Plumbing & Heating Ltd2020
All plumbing and heating companies in Doncaster · All trades in Doncaster · Plumbers and heating engineers across the UK
Frequently asked questions
When are Tna Plumbing and Heating Ltd's accounts due?
Tna Plumbing and Heating Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Tna Plumbing and Heating Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Tna Plumbing and Heating Ltd still trading?
Tna Plumbing and 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 Tna Plumbing and Heating Ltd do?
Tna Plumbing and Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Tna Plumbing and Heating Ltd?
Tna Plumbing and Heating Ltd was incorporated on 31 December 2018, 7 years ago.
What is the penalty if Tna Plumbing and 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 Tna Plumbing and 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.