- Companies
- Civil engineering
- Ammanford
- RJ Rail & Civils Ltd
RJ Rail & Civils Ltd
- Company number
- 14527189
- Incorporated
- 7 Dec 20223 years trading
- Registered office
- 136 Cwmgarw Road, Upper Brynaman, Ammanford, Carmarthenshire, SA18 1DA
- Nature of business
- Construction of railways and underground railways; Construction of other civil engineering projects n.e.c.
RJ Rail & Civils Ltd is a 3-year-old private limited company registered in Ammanford, company number 14527189, one of 8 civil engineering contractors in Ammanford. 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.
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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 £244 (+3.5%) on the year before, to £7,254.
- Current assets of £37K against £32K owed within a year: 1.2 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £7,254 | £12K | £37K | £32K | 2 |
| 31 Dec 2024 | £7,010 | £13K | £29K | £24K | 1 |
| 31 Dec 2023 | £5,760 | £31K | £27K | 1 |
Where RJ Rail & Civils Ltd is registered
The registered office is in Ammanford (SA18), in the Carmarthenshire local authority area, Wales. Show SA18 1DA on a map.
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What happens if RJ Rail & Civils 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
- 14527189
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 December 2022 (3 years ago)
- Registered office
- 136 Cwmgarw Road, Upper Brynaman, Ammanford, Carmarthenshire, SA18 1DA
- Nature of business
- Construction of railways and underground railways (SIC 42120)
Construction of other civil engineering projects n.e.c. (SIC 42990) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 16 September 2026
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 Ammanford
Other active civil engineering contractors registered in Ammanford.
- Dafku Construction Ltd2026
- David Hardwick Fencing Ltd2009
- FS Engineering and Surveying Services Limited2023
- LGBT Limited2009
- MNR Civils & Consultancy Ltd2026
- Platinum Pavers Ltd2025
- Red Engineers Limited2006
All civil engineering contractors in Ammanford · All trades in Ammanford · Civil engineering across the UK
Frequently asked questions
When are RJ Rail & Civils Ltd's accounts due?
RJ Rail & Civils Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is RJ Rail & Civils 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 RJ Rail & Civils Ltd still trading?
RJ Rail & Civils 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 RJ Rail & Civils Ltd do?
RJ Rail & Civils Ltd is registered under Construction of railways and underground railways (SIC 42120); Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is RJ Rail & Civils Ltd?
RJ Rail & Civils Ltd was incorporated on 7 December 2022, 3 years ago.
What is the penalty if RJ Rail & Civils 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 RJ Rail & Civils 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.