- Companies
- Civil engineering
- Merthyr Tydfil
- JLC Groundwork Contractors Ltd
JLC Groundwork Contractors Ltd
- Company number
- 13648367
- Incorporated
- 28 Sep 20215 years trading
- Registered office
- Ind Est, Willow Works Abercanaid, Merthyr, Merthyr Tydfil, CF48 1YF
- Nature of business
- Construction of roads and motorways
JLC Groundwork Contractors Ltd is a 5-year-old private limited company registered in Merthyr Tydfil, company number 13648367, one of 36 civil engineering contractors in Merthyr Tydfil. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £80K (+15.8%) on the year before, to £585K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £440K against £103K owed within a year: 4.3 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £585K | £165K | £440K | £103K | 2 |
| 30 Sep 2024 | £505K | £325K | £386K | £103K | 2 |
| 30 Sep 2023 | £390K | £358K | £398K | £199K | 2 |
| 30 Sep 2022 | £158K | £142K | £177K | £50K | 2 |
Where JLC Groundwork Contractors Ltd is registered
The registered office is in Merthyr Tydfil (CF48), in the Merthyr Tydfil local authority area, Wales. Show CF48 1YF on a map.
Other trade companies in CF48
- Valley Roofing Building & Carpentry LimitedRoofers
- Ajl Rail/Civil Engineering LtdCivil engineering
- M&K Valeting LtdCleaning companies
- Mdgroundworks LtdGroundworks and demolition
- Craig Lloyd Groundworks LtdCivil engineering
- Noarc Electrical LtdElectricians
- Elt Brickwork LimitedBuilders
- JBH Decorating LimitedPainters and decorators
What happens if JLC Groundwork Contractors 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 13648367
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 September 2021 (5 years ago)
- Registered office
- Ind Est, Willow Works Abercanaid, Merthyr, Merthyr Tydfil, CF48 1YF
- Nature of business
- Construction of roads and motorways (SIC 42110)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 27 September 2025
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 Merthyr Tydfil
Other active civil engineering contractors registered in Merthyr Tydfil.
- Joe Nettle Rail Ltd2025
- KLR (Services) Ltd2014
- LJ Hubbard Ltd2014
- Ljim Limited2025
- Mikerry Rail Limited2006
- MWB 141 Services Limited2020
- Raynes (South Wales) Ltd2014
- RLB Rail Services Ltd2014
All civil engineering contractors in Merthyr Tydfil · All trades in Merthyr Tydfil · Civil engineering across the UK
Frequently asked questions
When are JLC Groundwork Contractors Ltd's accounts due?
JLC Groundwork Contractors Ltd's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is JLC Groundwork Contractors Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is JLC Groundwork Contractors Ltd still trading?
JLC Groundwork Contractors 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 JLC Groundwork Contractors Ltd do?
JLC Groundwork Contractors Ltd is registered under Construction of roads and motorways (SIC 42110).
How old is JLC Groundwork Contractors Ltd?
JLC Groundwork Contractors Ltd was incorporated on 28 September 2021, 5 years ago.
What is the penalty if JLC Groundwork Contractors 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 JLC Groundwork Contractors 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.