- Companies
- Plumbers and heating engineers
- Ballymena
- Maine Mechanical Services Limited
Maine Mechanical Services Limited
- Company number
- NI669048
- Incorporated
- 22 Apr 20206 years trading
- Registered office
- 9 Cairn Hill, Dunloy, Ballymena, BT44 9FB
- Nature of business
- Plumbing, heat and air-conditioning installation; Other engineering activities
Maine Mechanical Services Limited is a 6-year-old private limited company registered in Ballymena, company number NI669048, one of 22 plumbing and heating companies in Ballymena. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £20K (-26.4%) on the year before, to -£95K.
- Net assets rose in 0 of 3 year-on-year comparisons on record.
- Current assets of £2,733 against £116K owed within a year: 0.0 times cover.
- 4 employees on average, down from 6 the year before.
- Balance sheets on record for 4 years, 2021 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2024 | -£95K | £2,665 | £2,733 | £116K | 4 |
| 30 Apr 2023 | -£75K | £17K | £23K | £117K | 6 |
| 30 Apr 2022 | -£63K | £30K | £32K | £103K | 6 |
| 30 Apr 2021 | -£49K | £6,817 | £22K | £81K | 6 |
Where Maine Mechanical Services Limited is registered
The registered office is in Ballymena (BT44), in the Causeway Coast and Glens local authority area, Northern Ireland. Show BT44 9FB on a map.
Other trade companies in BT44
- Ono Joinery LtdJoiners and carpenters
- Renarsjk LtdCleaning companies
- O'Kane Industrial Systems LtdMachinery repair and installation
- Commercial Agri Structures LtdBuilders
- MCG Propco Whitehead LimitedProperty developers
- Amg Rib Repair Ireland LimitedMachinery repair and installation
- Suredry-NI LimitedPlumbers and heating engineers
- CSP and Maintenance LtdFinishing trades
What happens if Maine Mechanical Services Limited 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
- NI669048
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 April 2020 (6 years ago)
- Registered office
- 9 Cairn Hill, Dunloy, Ballymena, BT44 9FB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other engineering activities (SIC 71129) - Year end
- 31 March (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 7 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 Ballymena
Other active plumbing and heating companies registered in Ballymena.
- Mooney Mechanical Installations Ltd2007
- NI Leaky Finders Ltd2020
- PMCT Plumbing and Heating Ltd2021
- R & M Martin Plumbing Ltd2013
- RC Mechanical Services Ltd2026
- Richmond Mechanical Limited2022
- SD Plumbing + Heating Contracts Limited2018
- Shane FM Ltd2023
All plumbing and heating companies in Ballymena · All trades in Ballymena · Plumbers and heating engineers across the UK
Frequently asked questions
When are Maine Mechanical Services Limited's accounts due?
Maine Mechanical Services Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Maine Mechanical Services Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Maine Mechanical Services Limited still trading?
Maine Mechanical Services Limited 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 Maine Mechanical Services Limited do?
Maine Mechanical Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other engineering activities (SIC 71129).
How old is Maine Mechanical Services Limited?
Maine Mechanical Services Limited was incorporated on 22 April 2020, 6 years ago.
What is the penalty if Maine Mechanical Services Limited 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 Maine Mechanical Services Limited 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.