- Companies
- Machinery repair and installation
- Larne
- Gas Plumbing & Mechanical Services Ltd
Gas Plumbing & Mechanical Services Ltd
- Company number
- NI639650
- Incorporated
- 15 Jul 201610 years trading
- Registered office
- c/o Falconer Stewart, Suite 4 Commercial Mews, Main Street, Larne, County Antrim, BT40 1HJ
- Nature of business
- Repair of other equipment
Gas Plumbing & Mechanical Services Ltd is a 10-year-old private limited company registered in Larne, company number NI639650, one of 40 machinery repair and installation companies in Larne. Its next accounts are due at Companies House on 25 December 2026, and its first CT600 is due at HMRC on 30 September 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 £49K (+44.6%) on the year before, to £157K.
- Net assets rose in 8 of 8 year-on-year comparisons on record.
- Current assets of £320K against £224K owed within a year: 1.4 times cover.
- 2 employees on average, down from 4 the year before.
- Balance sheets on record for 9 years, 2017 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2024 | £157K | £320K | £224K | 2 | |
| 30 Sep 2023 | £109K | £326K | £215K | 4 | |
| 30 Sep 2022 | £75K | £314K | £236K | 3 | |
| 30 Sep 2021 | £45K | £181K | £123K | 2 | |
| 30 Sep 2020 | £25K | £131K | £74K | 2 | |
| 30 Sep 2019 | £22K | £41K | £47K | 2 | |
| 30 Sep 2018 | £19K | £28K | £42K | ||
| 30 Sep 2017 | £16K | £12K | £30K | ||
| 31 Jul 2017 | £100 | £100 |
Where Gas Plumbing & Mechanical Services Ltd is registered
The registered office is in Larne (BT40), in the Mid and East Antrim local authority area, Northern Ireland. Show BT40 1HJ on a map.
Other trade companies in BT40
- GW Home Improvements and Maintenance LtdBuilders
- East Coast Contracting NI LtdBuilders
- Abbey Washing Machines LtdRepair services
- CM Fit Out & Construction LtdJoiners and carpenters
- Blackwood & Crawford LtdProperty developers
- TT Tiling LtdFloor and wall tilers
- JM Servicess LtdSpecialist contractors
- NPH Heating and Plumbing LtdPlumbers and heating engineers
Shared registered office
72 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Gas Plumbing & Mechanical Services 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 25 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 Dec 2026 to 25 Jan 2027 | £150 |
| 1 to 3 months late | 26 Jan 2027 to 25 Mar 2027 | £375 |
| 3 to 6 months late | 26 Mar 2027 to 25 Jun 2027 | £750 |
| More than 6 months late | From 26 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 26 Mar 2027 | £200 |
| 3 months late | 25 Jun 2027 | another £200 |
| 6 months late | 25 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 25 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
- NI639650
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 July 2016 (10 years ago)
- Registered office
- c/o Falconer Stewart, Suite 4 Commercial Mews, Main Street, Larne, County Antrim, BT40 1HJ
- Nature of business
- Repair of other equipment (SIC 33190)
- Year end
- 26 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2024
- Last confirmation statement
- 14 July 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Larne
Other active machinery repair and installation companies registered in Larne.
- GM QMS Ltd2025
- Hesketh Works Ltd2019
- Ig Engineering (N.I.) Ltd2025
- Island Safety Specialists Limited2014
- JDM Steelworks Ltd2025
- Jettech Global Ltd2018
- JKS (N.I.) Ltd2025
- KLJF Ltd2023
All machinery repair and installation companies in Larne · All trades in Larne · Machinery repair and installation across the UK
Frequently asked questions
When are Gas Plumbing & Mechanical Services Ltd's accounts due?
Gas Plumbing & Mechanical Services Ltd's next accounts are due at Companies House by 25 December 2026 (in 73 days), covering the period to 25 March 2026.
When is Gas Plumbing & Mechanical Services 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 30 September 2025, due by 30 September 2026, and one for the period to 25 March 2026, due by 25 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Gas Plumbing & Mechanical Services Ltd still trading?
Gas Plumbing & Mechanical Services 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 Gas Plumbing & Mechanical Services Ltd do?
Gas Plumbing & Mechanical Services Ltd is registered under Repair of other equipment (SIC 33190).
How old is Gas Plumbing & Mechanical Services Ltd?
Gas Plumbing & Mechanical Services Ltd was incorporated on 15 July 2016, 10 years ago.
What is the penalty if Gas Plumbing & Mechanical Services 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 Gas Plumbing & Mechanical Services 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.