- Companies
- Machinery repair and installation
- Larne
- RKCM Engineering Ltd
RKCM Engineering Ltd
- Company number
- NI727132
- Incorporated
- 6 Mar 20251 year trading
- Registered office
- Suite 4 Commercial Mews, 93-97 Main Street, Larne, BT40 1HJ
- Nature of business
- Repair and maintenance of aircraft and spacecraft
RKCM Engineering Ltd is a 1-year-old private limited company registered in Larne, company number NI727132, one of 40 machinery repair and installation companies in Larne. Its next accounts are due at Companies House on 6 December 2026, and its first CT600 is due at HMRC on 5 March 2027.
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 RKCM Engineering 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 RKCM Engineering 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 6 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 7 Dec 2026 to 6 Jan 2027 | £150 |
| 1 to 3 months late | 7 Jan 2027 to 6 Mar 2027 | £375 |
| 3 to 6 months late | 7 Mar 2027 to 6 Jun 2027 | £750 |
| More than 6 months late | From 7 Jun 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
- NI727132
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 March 2025 (1 year ago)
- Registered office
- Suite 4 Commercial Mews, 93-97 Main Street, Larne, BT40 1HJ
- Nature of business
- Repair and maintenance of aircraft and spacecraft (SIC 33160)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
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.
- Select Energy Engineering Limited2003
- Smart Energy Solutions NI Ltd Ltd2014
- Source Inspection Ltd2023
- Spelve Enterprises Limited2018
- Sroseglobal Ltd2021
- The Gas Man (N.I.) Services Ltd2019
- TSM (N.I.) Ltd2026
- WJW Services Ltd2025
All machinery repair and installation companies in Larne · All trades in Larne · Machinery repair and installation across the UK
Frequently asked questions
When are RKCM Engineering Ltd's accounts due?
RKCM Engineering Ltd's next accounts are due at Companies House by 6 December 2026 (in 55 days), covering the period to 31 March 2026.
When is RKCM Engineering 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 5 March 2026, due by 5 March 2027, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is RKCM Engineering Ltd still trading?
RKCM Engineering Ltd is listed as active on the Companies House register (checked 12 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 RKCM Engineering Ltd do?
RKCM Engineering Ltd is registered under Repair and maintenance of aircraft and spacecraft (SIC 33160).
How old is RKCM Engineering Ltd?
RKCM Engineering Ltd was incorporated on 6 March 2025, 1 year ago.
What is the penalty if RKCM Engineering 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 RKCM Engineering Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.