- Company number
- 17270623
- Incorporated
- 9 Jun 2026
- Registered office
- 8 Carreg Cennen Gardens, Bonymaen, Swansea, SA1 7DJ
- Nature of business
- Construction of domestic buildings; Roofing activities
Williams Building & Roofing Services Ltd is a newly incorporated private limited company registered in Swansea, company number 17270623, one of 204 building contractors in Swansea. Its next accounts are due at Companies House on 9 March 2028, and its first CT600 is due at HMRC on 8 June 2028.
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 Williams Building & Roofing Services Ltd is registered
The registered office is in Swansea (SA1), in the Swansea local authority area, Wales. Show SA1 7DJ on a map.
Other trade companies in SA1
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- D & M Carpentry and Construction LimitedCivil engineering
- Westway Window Systems LimitedJoiners and carpenters
- International Classic Car Sales LtdMotor traders
- Edefec LtdBuilders
- Swansea Scaffolding Services LtdScaffolders
- Lou's Paint and Finish LimitedPainters and decorators
- Mesa Property Development LtdProperty developers
What happens if Williams Building & Roofing Services 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 9 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 10 Mar 2028 to 9 Apr 2028 | £150 |
| 1 to 3 months late | 10 Apr 2028 to 9 Jun 2028 | £375 |
| 3 to 6 months late | 10 Jun 2028 to 9 Sep 2028 | £750 |
| More than 6 months late | From 10 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 2029 | 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
- 17270623
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 June 2026
- Registered office
- 8 Carreg Cennen Gardens, Bonymaen, Swansea, SA1 7DJ
- Nature of business
- Construction of domestic buildings (SIC 41202)
Roofing activities (SIC 43910) - Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 11 September 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 Swansea
Other active building contractors registered in Swansea.
- Winstonian Construction Services Ltd2020
- Woodlands Developments (South Wales) Limited1988
- Ystrad Mynach Developments SPV 1 Ltd2022
- 3 PDC Limited2006
- A & K Bricklaying Services Ltd2019
- A & L Bricklaying Services Ltd2018
- A H I Trading Ltd2015
- A S & E Contracts Ltd2014
All building contractors in Swansea · All trades in Swansea · Builders across the UK
Frequently asked questions
When are Williams Building & Roofing Services Ltd's accounts due?
Williams Building & Roofing Services Ltd's next accounts are due at Companies House by 9 March 2028 (in 513 days), covering the period to 30 June 2027.
When is Williams Building & Roofing Services 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 8 June 2027, due by 8 June 2028, and one for the period to 30 June 2027, due by 30 June 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Williams Building & Roofing Services Ltd still trading?
Williams Building & Roofing Services 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 Williams Building & Roofing Services Ltd do?
Williams Building & Roofing Services Ltd is registered under Construction of domestic buildings (SIC 41202); Roofing activities (SIC 43910).
How old is Williams Building & Roofing Services Ltd?
Williams Building & Roofing Services Ltd was incorporated on 9 June 2026, less than a year ago.
What is the penalty if Williams Building & Roofing Services 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 Williams Building & Roofing Services 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.