- Companies
- Civil engineering
- Swindon
- South West Groundwork’S & Civil Engineering Ltd
South West Groundwork’S & Civil Engineering Ltd
- Company number
- 15441536
- Incorporated
- 25 Jan 20242 years trading
- Registered office
- 1 Carter Close, Swindon, SN25 4AD
- Nature of business
- Construction of roads and motorways
South West Groundwork’S & Civil Engineering Ltd is a 2-year-old private limited company registered in Swindon, company number 15441536, one of 67 civil engineering contractors in Swindon. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where South West Groundwork’S & Civil Engineering Ltd is registered
The registered office is in Swindon (SN25), in the Swindon local authority area, South West. Show SN25 4AD on a map.
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What happens if South West Groundwork’S & Civil Engineering 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 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 15441536
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 January 2024 (2 years ago)
- Registered office
- 1 Carter Close, Swindon, SN25 4AD
- Nature of business
- Construction of roads and motorways (SIC 42110)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 24 January 2026
- Charges (mortgages)
- 2 outstanding of 2 registered
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 Swindon
Other active civil engineering contractors registered in Swindon.
- Sure Plugs Ltd2024
- Thornton Independent Ltd2024
- UK Groundwork Contractors Limited2017
- Unity Signalling Ltd2026
- Woodleaze Groundworks and Civil Engineering Ltd2019
- Woody's Water Utilities Ltd2026
- Wroughton Building Contractors Limited2001
- Yeokom Engineering Ltd2017
All civil engineering contractors in Swindon · All trades in Swindon · Civil engineering across the UK
Frequently asked questions
When are South West Groundwork’S & Civil Engineering Ltd's accounts due?
South West Groundwork’S & Civil Engineering Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is South West Groundwork’S & Civil Engineering Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is South West Groundwork’S & Civil Engineering Ltd still trading?
South West Groundwork’S & Civil Engineering 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 South West Groundwork’S & Civil Engineering Ltd do?
South West Groundwork’S & Civil Engineering Ltd is registered under Construction of roads and motorways (SIC 42110).
How old is South West Groundwork’S & Civil Engineering Ltd?
South West Groundwork’S & Civil Engineering Ltd was incorporated on 25 January 2024, 2 years ago.
What is the penalty if South West Groundwork’S & Civil Engineering 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 South West Groundwork’S & Civil Engineering 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.