- Companies
- Civil engineering
- Cardiff
- SG Traders Limited
SG Traders Limited
- Company number
- 16299671
- Incorporated
- 7 Mar 20251 year trading
- Registered office
- PO Box 4385, 16299671 - Companies House Default Address, Cardiff, CF14 8LH
- Nature of business
- Construction of other civil engineering projects n.e.c.; Other specialised construction activities n.e.c.; Landscape service activities; Other business support service activities n.e.c.
SG Traders Limited is a 1-year-old private limited company registered in Cardiff, company number 16299671, one of 89 civil engineering contractors in Cardiff. Its next accounts are due at Companies House on 7 December 2026, and its first CT600 is due at HMRC on 6 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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Where SG Traders Limited is registered
The registered office is in Cardiff (CF14), in the Caerphilly local authority area, Wales. Show CF14 8LH on a map.
Other trade companies in CF14
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- Premierroofcare LtdRoofers
- JLG Groundworks LtdCleaning companies
- Tidyvibz LtdCleaning companies
- Ayyappa MTD LtdBuilders
- KM Phoenix Pond, Garden & General Maintenance LtdLandscapers and gardeners
- Eco Green Property Service LtdFinishing trades
- S and J Accident Repairs LtdPainters and decorators
What happens if SG Traders 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 7 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 8 Dec 2026 to 7 Jan 2027 | £150 |
| 1 to 3 months late | 8 Jan 2027 to 7 Mar 2027 | £375 |
| 3 to 6 months late | 8 Mar 2027 to 7 Jun 2027 | £750 |
| More than 6 months late | From 8 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 16299671
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 March 2025 (1 year ago)
- Registered office
- PO Box 4385, 16299671 - Companies House Default Address, Cardiff, CF14 8LH
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Other specialised construction activities n.e.c. (SIC 43999)
Landscape service activities (SIC 81300)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 9 June 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 Cardiff
Other active civil engineering contractors registered in Cardiff.
- Sherwood Groundworks Limited2020
- Smith Choice Engineering Ltd2021
- Standen Geospatial Ltd2020
- Swift Utility and Civil Engineering Services Limited2014
- Tekniq Engineering Ltd2026
- Thane Cemetery Supplies Limited2006
- Thortech International Ltd2023
- To Solutions Ltd2026
All civil engineering contractors in Cardiff · All trades in Cardiff · Civil engineering across the UK
Frequently asked questions
When are SG Traders Limited's accounts due?
SG Traders Limited's next accounts are due at Companies House by 7 December 2026 (in 56 days), covering the period to 31 March 2026.
When is SG Traders 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 6 March 2026, due by 6 March 2027, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is SG Traders Limited still trading?
SG Traders Limited 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 SG Traders Limited do?
SG Traders Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Other specialised construction activities n.e.c. (SIC 43999); Landscape service activities (SIC 81300); Other business support service activities n.e.c. (SIC 82990).
How old is SG Traders Limited?
SG Traders Limited was incorporated on 7 March 2025, 1 year ago.
What is the penalty if SG Traders 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 SG Traders Limited 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.