- Companies
- Plumbers and heating engineers
- Newry
- Mallon Plumbing & Gas Ltd
Mallon Plumbing & Gas Ltd
- Company number
- NI743072
- Incorporated
- 18 Aug 2026
- Registered office
- Unit 1A Old Gasworks Business Park, Kilmorey Street, Newry, BT34 2DH
- Nature of business
- Plumbing, heat and air-conditioning installation
Mallon Plumbing & Gas Ltd is a newly incorporated private limited company registered in Newry, company number NI743072, one of 72 plumbing and heating companies in Newry. Its next accounts are due at Companies House on 18 May 2028, and its first CT600 is due at HMRC on 17 August 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Mallon Plumbing & Gas Ltd is registered
The registered office is in Newry (BT34), in the Newry, Mourne and Down local authority area, Northern Ireland. Show BT34 2DH on a map.
Other trade companies in BT34
- JMP Live LimitedElectricians
- SSL Solar & Electrical LimitedElectricians
- Ocn Construction LtdBuilders
- Warren Properties Ireland LimitedBuilders
- Rog Electrical LtdElectricians
- DMN Mechanics LimitedMotor traders
- M & M Consultants Ire LtdSpecialist contractors
- C Quinn Contracts LtdBuilders
Also registered at this address
12 other companies use the same registered office as Mallon Plumbing & Gas Ltd.
- Amc Mechanical LtdMechanics and garages
- CLM Tyres LimitedMotor traders
- Combridge Developments LimitedBuilders
- Includit LtdInstallers
- J Dawson Contracts LtdLandscapers and gardeners
- JHS Windows LimitedGlaziers
- JNV Electrical LimitedElectricians
- McLarnon Facilities & Projects LtdLandscapers and gardeners
- Morgan Tiling Contractors LimitedInstallers
- NB Prestige & Performance LtdMotor traders
- Rok Engineering and Fabrication LtdMechanics and garages
- Tech Installations Ireland LimitedInstallers
What happens if Mallon Plumbing & Gas 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 18 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 19 May 2028 to 18 Jun 2028 | £150 |
| 1 to 3 months late | 19 Jun 2028 to 18 Aug 2028 | £375 |
| 3 to 6 months late | 19 Aug 2028 to 18 Nov 2028 | £750 |
| More than 6 months late | From 19 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2029 | 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
- NI743072
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 August 2026
- Registered office
- Unit 1A Old Gasworks Business Park, Kilmorey Street, Newry, BT34 2DH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
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 Newry
Other active plumbing and heating companies registered in Newry.
- MC Court Mechanical Services Ltd2023
- McCusker Limited2016
- McKeever Plumbing Ltd2025
- MCL Plumbing & Heating Contracts Ltd2017
- McLoughlin Services Limited2017
- MGM Mechanical Services Limited2007
- Mgmech Limited2025
- MJ Plumbing Contracts Ltd2012
All plumbing and heating companies in Newry · All trades in Newry · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mallon Plumbing & Gas Ltd's accounts due?
Mallon Plumbing & Gas Ltd's next accounts are due at Companies House by 18 May 2028 (in 583 days), covering the period to 31 August 2027.
When is Mallon Plumbing & Gas 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 17 August 2027, due by 17 August 2028, and one for the period to 31 August 2027, due by 31 August 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mallon Plumbing & Gas Ltd still trading?
Mallon Plumbing & Gas 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 Mallon Plumbing & Gas Ltd do?
Mallon Plumbing & Gas Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Mallon Plumbing & Gas Ltd?
Mallon Plumbing & Gas Ltd was incorporated on 18 August 2026, less than a year ago.
What is the penalty if Mallon Plumbing & Gas 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 Mallon Plumbing & Gas 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.