- Companies
- Civil engineering
- Merthyr Tydfil
- Collins Construction South Wales Ltd
Collins Construction South Wales Ltd
- Company number
- 16633567
- Incorporated
- 6 Aug 20251 year trading
- Registered office
- 15 Maen Dy, Merthyr Tydfil, CF48 1EU
- Nature of business
- Construction of roads and motorways
Collins Construction South Wales Ltd is a 1-year-old private limited company registered in Merthyr Tydfil, company number 16633567, one of 36 civil engineering contractors in Merthyr Tydfil. Its next accounts are due at Companies House on 6 May 2027, and its first CT600 is due at HMRC on 5 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 Collins Construction South Wales Ltd is registered
The registered office is in Merthyr Tydfil (CF48), in the Merthyr Tydfil local authority area, Wales. Show CF48 1EU 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
Also registered at this address
1 other company uses the same registered office as Collins Construction South Wales Ltd.
- Collins4Construction LtdCivil engineering
What happens if Collins Construction South Wales 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 7 May 2027 to 6 Jun 2027 | £150 |
| 1 to 3 months late | 7 Jun 2027 to 6 Aug 2027 | £375 |
| 3 to 6 months late | 7 Aug 2027 to 6 Nov 2027 | £750 |
| More than 6 months late | From 7 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
- 16633567
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 August 2025 (1 year ago)
- Registered office
- 15 Maen Dy, Merthyr Tydfil, CF48 1EU
- Nature of business
- Construction of roads and motorways (SIC 42110)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 31 July 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 Merthyr Tydfil
Other active civil engineering contractors registered in Merthyr Tydfil.
- Collins4Construction Ltd2022
- Construction and Labour Management Ltd2024
- Construction Force Ltd2026
- Craig Lloyd Groundworks Ltd2026
- D&O Steelfixing Ltd2025
- Distinction Rigging and Electrical Ltd2020
- Fonseca Traffic Management & Rail Solutions Ltd2015
- G&B Murphy Rail Limited2022
All civil engineering contractors in Merthyr Tydfil · All trades in Merthyr Tydfil · Civil engineering across the UK
Frequently asked questions
When are Collins Construction South Wales Ltd's accounts due?
Collins Construction South Wales Ltd's next accounts are due at Companies House by 6 May 2027 (in 205 days), covering the period to 31 August 2026.
When is Collins Construction South Wales 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 August 2026, due by 5 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 Collins Construction South Wales Ltd still trading?
Collins Construction South Wales 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 Collins Construction South Wales Ltd do?
Collins Construction South Wales Ltd is registered under Construction of roads and motorways (SIC 42110).
How old is Collins Construction South Wales Ltd?
Collins Construction South Wales Ltd was incorporated on 6 August 2025, 1 year ago.
What is the penalty if Collins Construction South Wales 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 Collins Construction South Wales 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.