- Companies
- Plumbers and heating engineers
- Armagh
- N McKernan Ltd
N McKernan Ltd
- Company number
- NI663816
- Incorporated
- 20 Aug 20197 years trading
- Registered office
- 17 Knockbane Road, Middletown, Armagh, BT60 4JH
- Nature of business
- Plumbing, heat and air-conditioning installation
N McKernan Ltd is a 7-year-old private limited company registered in Armagh, company number NI663816, one of 18 plumbing and heating companies in Armagh. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where N McKernan Ltd is registered
The registered office is in Armagh (BT60), in the Armagh City, Banbridge and Craigavon local authority area, Northern Ireland. Show BT60 4JH on a map.
Other trade companies in BT60
- Zarya Energy LtdElectricians
- Linton Electrical LtdElectricians
- SGM Development Group LimitedBuilders
- Alloy Doctor LtdMachinery repair and installation
- Vision Maintenance and Cleaning LtdCleaning companies
- Total Floor Design LtdFloor and wall tilers
- Treanor Car Sales LtdMotor traders
- SFM Plumbing LimitedPlumbers and heating engineers
What happens if N McKernan 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- NI663816
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 August 2019 (7 years ago)
- Registered office
- 17 Knockbane Road, Middletown, Armagh, BT60 4JH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 18 August 2026
- Previous names
- M K Renewables Ltd (until 29 Aug 2024)
McKernan Plumbing and Heating Ltd (until 27 Apr 2022)
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.
- Nugent Plumbing Ltd2025
- PNB Plumbing Limited2019
- Powertech Refrigeration Ltd2004
- SMS Plumbing & Heating (N.I.) Limited2018
- A & J Plumbing Services Ltd2019
- Cill Chluana Mechanical Ltd2025
- Cyclone Air Conditioning & Ventilation Ltd2021
- Desart Contracts Ltd2018
All plumbing and heating companies in Armagh · All trades in Armagh · Plumbers and heating engineers across the UK
Frequently asked questions
When are N McKernan Ltd's accounts due?
N McKernan Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is N McKernan Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is N McKernan Ltd still trading?
N McKernan 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 N McKernan Ltd do?
N McKernan Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is N McKernan Ltd?
N McKernan Ltd was incorporated on 20 August 2019, 7 years ago.
What is the penalty if N McKernan 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 N McKernan 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.