- Companies
- Civil engineering
- Antrim
- MJL Rail Works Limited
MJL Rail Works Limited
- Company number
- NI732225
- Incorporated
- 9 Aug 20251 year trading
- Registered office
- 19 Moss Drive, Antrim, BT41 1PY
- Nature of business
- Construction of railways and underground railways
MJL Rail Works Limited is a 1-year-old private limited company registered in Antrim, company number NI732225, one of 6 civil engineering contractors in Antrim. Its next accounts are due at Companies House on 9 May 2027, and its first CT600 is due at HMRC on 8 August 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 MJL Rail Works Limited is registered
The registered office is in Antrim (BT41), in the Antrim and Newtownabbey local authority area, Northern Ireland. Show BT41 1PY on a map.
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What happens if MJL Rail Works 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 9 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 10 May 2027 to 9 Jun 2027 | £150 |
| 1 to 3 months late | 10 Jun 2027 to 9 Aug 2027 | £375 |
| 3 to 6 months late | 10 Aug 2027 to 9 Nov 2027 | £750 |
| More than 6 months late | From 10 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- NI732225
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 August 2025 (1 year ago)
- Registered office
- 19 Moss Drive, Antrim, BT41 1PY
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Antrim
Other active civil engineering contractors registered in Antrim.
- S.L. Fry Limited2015
- Shannon Site Solutions Ltd2013
- Daly Plant & Groundworks Ltd2026
- F. O' Hara Contracts Ltd2005
- Metric Contracts Ltd2020
All civil engineering contractors in Antrim · All trades in Antrim · Civil engineering across the UK
Frequently asked questions
When are MJL Rail Works Limited's accounts due?
MJL Rail Works Limited's next accounts are due at Companies House by 9 May 2027 (in 208 days), covering the period to 31 August 2026.
When is MJL Rail Works Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 8 August 2026, due by 8 August 2027, and one for the period to 31 August 2026, due by 31 August 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is MJL Rail Works Limited still trading?
MJL Rail Works 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 MJL Rail Works Limited do?
MJL Rail Works Limited is registered under Construction of railways and underground railways (SIC 42120).
How old is MJL Rail Works Limited?
MJL Rail Works Limited was incorporated on 9 August 2025, 1 year ago.
What is the penalty if MJL Rail Works 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 MJL Rail Works 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.