- Companies
- Finishing trades
- Caerphilly
- Celtic Construction Services Limited
Celtic Construction Services Limited
- Company number
- 16707780
- Incorporated
- 10 Sep 20251 year trading
- Registered office
- 56 the Crescent, Caerphilly, CF83 2SW
- Nature of business
- Other building completion and finishing; Other specialised construction activities n.e.c.
Celtic Construction Services Limited is a 1-year-old private limited company registered in Caerphilly, company number 16707780, one of 18 building finishing companies in Caerphilly. Its next accounts are due at Companies House on 10 June 2027, and its first CT600 is due at HMRC on 9 September 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 Celtic Construction Services Limited is registered
The registered office is in Caerphilly (CF83), in the Caerphilly local authority area, Wales. Show CF83 2SW on a map.
Other trade companies in CF83
- Owen PM LimitedBuilders
- Ecamscymru LtdMachinery repair and installation
- Bee Green Plumbing Solutions LtdPlumbers and heating engineers
- Tyga Constuction LimitedBuilders
- Grip Rip MX LtdMotor traders
- Da' Grave LtdRepair services
- First Class Cleaning Solutions LtdCleaning companies
- Vehicle Accident Repairs Solutions LtdMotor traders
What happens if Celtic Construction Services 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 10 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Jun 2027 to 10 Jul 2027 | £150 |
| 1 to 3 months late | 11 Jul 2027 to 10 Sep 2027 | £375 |
| 3 to 6 months late | 11 Sep 2027 to 10 Dec 2027 | £750 |
| More than 6 months late | From 11 Dec 2027 | £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
- 16707780
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 September 2025 (1 year ago)
- Registered office
- 56 the Crescent, Caerphilly, CF83 2SW
- Nature of business
- Other building completion and finishing (SIC 43390)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Caerphilly
Other active building finishing companies registered in Caerphilly.
- E & M Fencing Contractors Limited1997
- Fabrication & Erection UK Limited2010
- Itube Developments Ltd2019
- KDF Home Improvements Limited2015
- Kieran Jones Solutions Ltd2024
- LFB Contractors Ltd2025
- O'Brien Construction (South Wales) Limited2015
- Renovate South Wales Limited2024
All building finishing companies in Caerphilly · All trades in Caerphilly · Finishing trades across the UK
Frequently asked questions
When are Celtic Construction Services Limited's accounts due?
Celtic Construction Services Limited's next accounts are due at Companies House by 10 June 2027 (in 241 days), covering the period to 30 September 2026.
When is Celtic Construction Services 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 9 September 2026, due by 9 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Celtic Construction Services Limited still trading?
Celtic Construction Services Limited 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 Celtic Construction Services Limited do?
Celtic Construction Services Limited is registered under Other building completion and finishing (SIC 43390); Other specialised construction activities n.e.c. (SIC 43999).
How old is Celtic Construction Services Limited?
Celtic Construction Services Limited was incorporated on 10 September 2025, 1 year ago.
What is the penalty if Celtic Construction Services 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 Celtic Construction Services Limited 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.