- Companies
- Plumbers and heating engineers
- Newry
- A1 Plumbing Ltd
A1 Plumbing Ltd
- Company number
- NI655650
- Incorporated
- 12 Sep 20188 years trading
- Registered office
- Old Fire Station, Cecil Street, Newry, Co. Down, BT35 6AU
- Nature of business
- Plumbing, heat and air-conditioning installation
A1 Plumbing Ltd is a 8-year-old private limited company registered in Newry, company number NI655650, one of 72 plumbing and heating companies in Newry. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £898 (-9.9%) on the year before, to £8,204.
- Net assets rose in 2 of 6 year-on-year comparisons on record.
- Current assets of £11K against £2,491 owed within a year: 4.3 times cover.
- 1 employee 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | £8,204 | £11K | £2,491 | 1 | |
| 30 Sep 2024 | £9,102 | £11K | £2,218 | 1 | |
| 30 Sep 2023 | -£85 | £535 | £620 | 1 | |
| 30 Sep 2022 | £2,644 | £3,269 | £625 | 1 | |
| 30 Sep 2021 | £1 | £1 | |||
| 30 Sep 2020 | £1 | £1 | 1 | ||
| 30 Sep 2019 | £1 | £1 |
Where A1 Plumbing Ltd is registered
The registered office is in Newry (BT35), in the Newry, Mourne and Down local authority area, Northern Ireland. Show BT35 6AU on a map.
Other trade companies in BT35
- Kilkenny Commercials LimitedMotor traders
- XR Electrical LtdElectricians
- Roseglen Consulting LtdElectricians
- Maglen Mechanical LtdPlumbers and heating engineers
- Toman Roofing LtdJoiners and carpenters
- CBD Brickworks LtdBuilders
- Evvr Homes LtdCleaning companies
- CM Performance Parts LtdMotor traders
Also registered at this address
9 other companies use the same registered office as A1 Plumbing Ltd.
- Ben Electrics LtdElectricians
- Broad PK LtdElectricians
- Church Rock Concrete LtdFinishing trades
- Gmac Formwork LtdSpecialist contractors
- Gregan Construction LtdBuilders
- HQ Groundworks & Plant LtdSpecialist contractors
- JKM Services LtdBuilders
- NS Vehicle Sales LtdMotor traders
- NS4X4 UK LtdMotor traders
What happens if A1 Plumbing 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- NI655650
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 September 2018 (8 years ago)
- Registered office
- Old Fire Station, Cecil Street, Newry, Co. Down, BT35 6AU
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 11 September 2026
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.
- Acton Mechanical Limited2026
- Aghincurk Plumbing Ltd2017
- Aidan Black Plumbing & Heating Ltd2013
- Alliance Mechanical Limited2025
- B&M Mechanical Ltd2024
- BC Gas Heating Ltd2024
- BML Plumbing and Heating Ltd2024
- Brooklawn Services Ltd2019
All plumbing and heating companies in Newry · All trades in Newry · Plumbers and heating engineers across the UK
Frequently asked questions
When are A1 Plumbing Ltd's accounts due?
A1 Plumbing Ltd's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is A1 Plumbing Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is A1 Plumbing Ltd still trading?
A1 Plumbing 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 A1 Plumbing Ltd do?
A1 Plumbing Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is A1 Plumbing Ltd?
A1 Plumbing Ltd was incorporated on 12 September 2018, 8 years ago.
What is the penalty if A1 Plumbing 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 A1 Plumbing 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.