- Company number
- NI675235
- Incorporated
- 30 Dec 20205 years trading
- Registered office
- 52 Glassdrumman Road, Crossmaglen, Newry, BT35 9DY
- Nature of business
- Construction of commercial buildings; Construction of other civil engineering projects n.e.c.; Engineering related scientific and technical consulting activities; Renting and leasing of construction and civil engineering machinery and equipment
RMK Engineering Ltd is a 5-year-old private limited company registered in Newry, company number NI675235, one of 309 building contractors in Newry. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for RMK Engineering LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £4,800 (+248.1%) on the year before, to £6,735.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £6,735 | £6,735 | £0 | 1 | |
| 31 Dec 2024 | £1,935 | £1,935 | 1 | ||
| 31 Dec 2023 | £7,697 | £7,697 | £0 | 0 | |
| 31 Dec 2022 | £10K | £10K | £0 | 0 | |
| 31 Dec 2021 | £1,000 | £1,000 | £1,000 | 0 |
Where RMK Engineering Ltd is registered
The registered office is in Newry (BT35), in the Newry, Mourne and Down local authority area, Northern Ireland. Show BT35 9DY 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
What happens if RMK 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- NI675235
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 December 2020 (5 years ago)
- Registered office
- 52 Glassdrumman Road, Crossmaglen, Newry, BT35 9DY
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of other civil engineering projects n.e.c. (SIC 42990)
Engineering related scientific and technical consulting activities (SIC 71122)
Renting and leasing of construction and civil engineering machinery and equipment (SIC 77320) - Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 29 December 2025
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Newry
Other active building contractors registered in Newry.
- Rodgers Builders & Electrical Ltd2019
- Roe Contracts Ltd2023
- Roxborough Joinery Ltd2025
- RPH Construct NI Ltd2019
- RS Building Contracts Ltd2025
- RW Contracts Ltd2025
- Ryehill Contracts Ltd2012
- S McBride Maintenance Ltd2022
All building contractors in Newry · All trades in Newry · Builders across the UK
Frequently asked questions
When are RMK Engineering Ltd's accounts due?
RMK Engineering Ltd's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is RMK Engineering Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is RMK Engineering Ltd still trading?
RMK Engineering 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 RMK Engineering Ltd do?
RMK Engineering Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of other civil engineering projects n.e.c. (SIC 42990); Engineering related scientific and technical consulting activities (SIC 71122); Renting and leasing of construction and civil engineering machinery and equipment (SIC 77320).
How old is RMK Engineering Ltd?
RMK Engineering Ltd was incorporated on 30 December 2020, 5 years ago.
What is the penalty if RMK 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 RMK Engineering 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.