- Companies
- Civil engineering
- Caernarfon
- Gwynedd Grouting Ltd
Gwynedd Grouting Ltd
- Company number
- 16287770
- Incorporated
- 3 Mar 20251 year trading
- Registered office
- Tanfoel Fawr, Rhosgadfan, Caernarfon, LL54 7LB
- Nature of business
- Construction of other civil engineering projects n.e.c.; Other specialised construction activities n.e.c.
Gwynedd Grouting Ltd is a 1-year-old private limited company registered in Caernarfon, company number 16287770, one of 7 civil engineering contractors in Caernarfon. Its next accounts are due at Companies House on 3 December 2026, and its first CT600 is due at HMRC on 2 March 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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Public contracts won
Gwynedd Grouting Ltd has one public sector contract award on record (2026). Source: Contracts Finder and Find a Tender award notices. For all of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Cyngor Gwynedd | Gwynedd and Anglesey Structures & Coastal Maintenance Framework 2026 | Ceiling, not shown | 17 Aug 2026 |
Where Gwynedd Grouting Ltd is registered
The registered office is in Caernarfon (LL54), in the Gwynedd local authority area, Wales. Show LL54 7LB on a map.
Other trade companies in LL54
- Ow Autos LimitedMechanics and garages
- Sej Motors LtdMechanics and garages
- Aw Diving LtdCivil engineering
- PWG Construction LtdBuilders
- Cars Gwynedd LimitedMotor traders
- Gwasanaethau Adeiladu A Chyfleustodau WR Construction and Utility Services LimitedInstallers
- CLP Surfacing & Groundworks LtdCivil engineering
- Rirox LtdBuilders
What happens if Gwynedd Grouting 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 3 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 4 Dec 2026 to 3 Jan 2027 | £150 |
| 1 to 3 months late | 4 Jan 2027 to 3 Mar 2027 | £375 |
| 3 to 6 months late | 4 Mar 2027 to 3 Jun 2027 | £750 |
| More than 6 months late | From 4 Jun 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
- 16287770
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 March 2025 (1 year ago)
- Registered office
- Tanfoel Fawr, Rhosgadfan, Caernarfon, LL54 7LB
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 2 March 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 Caernarfon
Other active civil engineering contractors registered in Caernarfon.
- J T Morris & Co Limited2006
- Aw Diving Ltd2026
- Celtic Heritage Construction and Stonemasonry Limited2015
- Celtic Heritage Stonemasonry Limited2026
- Cemlyn Ltd2025
- CLP Surfacing & Groundworks Ltd2026
All civil engineering contractors in Caernarfon · All trades in Caernarfon · Civil engineering across the UK
Frequently asked questions
When are Gwynedd Grouting Ltd's accounts due?
Gwynedd Grouting Ltd's next accounts are due at Companies House by 3 December 2026 (in 51 days), covering the period to 31 August 2026.
When is Gwynedd Grouting 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 2 March 2026, due by 2 March 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 Gwynedd Grouting Ltd still trading?
Gwynedd Grouting 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 Gwynedd Grouting Ltd do?
Gwynedd Grouting Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Other specialised construction activities n.e.c. (SIC 43999).
How old is Gwynedd Grouting Ltd?
Gwynedd Grouting Ltd was incorporated on 3 March 2025, 1 year ago.
Has Gwynedd Grouting Ltd won public sector contracts?
Yes. Gwynedd Grouting Ltd has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from Cyngor Gwynedd.
What is the penalty if Gwynedd Grouting 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 Gwynedd Grouting 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.