- Company number
- 16509521
- Incorporated
- 10 Jun 20251 year trading
- Registered office
- 2-4 Wood Street, Swindon, SN1 4AB
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Painting; Other building completion and finishing
Cox & Sons Building Contractors Limited is a 1-year-old private limited company registered in Swindon, company number 16509521, one of 267 building contractors in Swindon. Its next accounts are due at Companies House on 10 March 2027, and its first CT600 is due at HMRC on 9 June 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 Cox & Sons Building Contractors Limited is registered
The registered office is in Swindon (SN1), in the Swindon local authority area, South West. Show SN1 4AB on a map.
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Also registered at this address
6 other companies use the same registered office as Cox & Sons Building Contractors Limited.
- Bridgemead Builders LtdBuilders
- Darren Inglis Bricklaying Services LimitedSpecialist contractors
- Opel Construction LtdProperty developers
- Peare Carpentry Contractors LimitedJoiners and carpenters
- Roca Blue LimitedProperty developers
- Rock Groundwork LtdSpecialist contractors
What happens if Cox & Sons Building Contractors 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Mar 2027 to 10 Apr 2027 | £150 |
| 1 to 3 months late | 11 Apr 2027 to 10 Jun 2027 | £375 |
| 3 to 6 months late | 11 Jun 2027 to 10 Sep 2027 | £750 |
| More than 6 months late | From 11 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 16509521
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 June 2025 (1 year ago)
- Registered office
- 2-4 Wood Street, Swindon, SN1 4AB
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Painting (SIC 43341)
Other building completion and finishing (SIC 43390) - Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 9 June 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Swindon
Other active building contractors registered in Swindon.
- Craig Donnelly Building Contractors Ltd2017
- CS Commercial Ltd2026
- Cvem Construction Ltd2026
- D Max Brickwork Limited2019
- D&B Group Carpentry Ltd2021
- Da Contractors Ltd2023
- Daglish Building Limited1996
- Danash Groundworks Ltd2018
All building contractors in Swindon · All trades in Swindon · Builders across the UK
Frequently asked questions
When are Cox & Sons Building Contractors Limited's accounts due?
Cox & Sons Building Contractors Limited's next accounts are due at Companies House by 10 March 2027 (in 148 days), covering the period to 30 June 2026.
When is Cox & Sons Building Contractors 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 June 2026, due by 9 June 2027, and one for the period to 30 June 2026, due by 30 June 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Cox & Sons Building Contractors Limited still trading?
Cox & Sons Building Contractors 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 Cox & Sons Building Contractors Limited do?
Cox & Sons Building Contractors Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Painting (SIC 43341); Other building completion and finishing (SIC 43390).
How old is Cox & Sons Building Contractors Limited?
Cox & Sons Building Contractors Limited was incorporated on 10 June 2025, 1 year ago.
What is the penalty if Cox & Sons Building Contractors 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 Cox & Sons Building Contractors 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.