- Companies
- Plumbers and heating engineers
- Armagh
- Greentherm Ltd
Greentherm Ltd
- Company number
- NI614025
- Incorporated
- 15 Aug 201214 years trading
- Registered office
- Armagh Business Centre, 2 Loughgall Road, Armagh, Armagh, BT61 7NH
- Nature of business
- Plumbing, heat and air-conditioning installation
Greentherm Ltd is a 14-year-old private limited company registered in Armagh, company number NI614025, one of 18 plumbing and heating companies in Armagh. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
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 £35 (+0.4%) on the year before, to £9,386.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £9,386 | £0 | £856 | 0 | |
| 31 Dec 2023 | £9,351 | £35 | £856 | 0 | |
| 31 Dec 2022 | £8,608 | £228 | £856 | 0 | |
| 31 Dec 2021 | £7,969 | £385 | £854 | 0 | |
| 31 Dec 2020 | £7,385 | £909 | £794 | 0 | |
| 31 Dec 2019 | £5,514 | £2,804 | £818 | 0 | |
| 31 Dec 2018 | £5,123 | £3,188 | £811 | ||
| 31 Dec 2017 | £110 | £8,220 | £830 | ||
| 31 Dec 2016 | -£558 | £8,485 | £9,043 | ||
| 31 Dec 2015 | -£8 | £8,375 | £8,383 |
Where Greentherm Ltd is registered
The registered office is in Armagh (BT61), in the Armagh City, Banbridge and Craigavon local authority area, Northern Ireland. Show BT61 7NH on a map.
Other trade companies in BT61
- MTC Global LtdMotor traders
- Solid Rock Construction LtdProperty developers
- P.Kelly Recycling LimitedGroundworks and demolition
- Sre Contracts LtdElectricians
- McArdle Roofing and Joinery LtdJoiners and carpenters
- Hughes Power and Civils LtdElectricians
- Aquarius Pumps N.I. LtdSpecialist contractors
- Four Seasons Garden Care & Maintenance LtdRoofers
What happens if Greentherm 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- NI614025
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 August 2012 (14 years ago)
- Registered office
- Armagh Business Centre, 2 Loughgall Road, Armagh, Armagh, BT61 7NH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 16 August 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 Armagh
Other active plumbing and heating companies registered in Armagh.
- Hanna Smyth Holdings Ltd2014
- Hughes HVAC Ltd2026
- JBT Mechanical Services Limited2017
- JLJ Mechanical Services Ltd2025
- LC Contracts Ltd2025
- N Finlay Refrigeration Ltd2023
- N McKernan Ltd2019
- Nugent Plumbing Ltd2025
All plumbing and heating companies in Armagh · All trades in Armagh · Plumbers and heating engineers across the UK
Frequently asked questions
When are Greentherm Ltd's accounts due?
Greentherm Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Greentherm Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Greentherm Ltd still trading?
Greentherm Ltd is listed as active on the Companies House register (checked 13 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 Greentherm Ltd do?
Greentherm Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Greentherm Ltd?
Greentherm Ltd was incorporated on 15 August 2012, 14 years ago.
What is the penalty if Greentherm 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 Greentherm Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.