- Company number
- 12524123
- Incorporated
- 18 Mar 20206 years trading
- Registered office
- 27 Thistleboon Road, Mumbles, Swansea, SA3 4HE
- Nature of business
- Construction of domestic buildings
Winstonian Construction Services Ltd is a 6-year-old private limited company registered in Swansea, company number 12524123, one of 204 building contractors in Swansea. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Winstonian Construction Services LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £11K (-59.8%) on the year before, to £7,278.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £5,939 against £1,777 owed within a year: 3.3 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £7,278 | £1,339 | £5,939 | £1,777 | 1 |
| 31 Mar 2024 | £18K | £23K | £28K | £13K | 1 |
| 31 Mar 2023 | £9,491 | £11K | £15K | £7,090 | 1 |
| 31 Mar 2022 | £2,506 | £143 | £4,013 | £3,605 | 1 |
| 31 Mar 2021 | £4,805 | £2,938 | £8,538 | £7,058 | 1 |
Where Winstonian Construction Services Ltd is registered
The registered office is in Swansea (SA3), in the Swansea local authority area, Wales. Show SA3 4HE on a map.
Other trade companies in SA3
- Laxlets LtdProperty developers
- Soulterra LtdProperty developers
- JCR Co1 LtdBuilders
- Gower Refrigeration and Air Conditioning LtdPlumbers and heating engineers
- JH Energy Engineering LtdProperty developers
- GHL CC LtdFloor and wall tilers
- Greenwarm CyfSpecialist contractors
- Jam Co1 LtdProperty developers
What happens if Winstonian Construction 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 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
- 12524123
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 March 2020 (6 years ago)
- Registered office
- 27 Thistleboon Road, Mumbles, Swansea, SA3 4HE
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 6 April 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.
- 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
- A-L-R Installation Group Ltd2025
All building contractors in Swansea · All trades in Swansea · Builders across the UK
Frequently asked questions
When are Winstonian Construction Services Ltd's accounts due?
Winstonian Construction Services Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Winstonian Construction Services Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Winstonian Construction Services Ltd still trading?
Winstonian Construction 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 Winstonian Construction Services Ltd do?
Winstonian Construction Services Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Winstonian Construction Services Ltd?
Winstonian Construction Services Ltd was incorporated on 18 March 2020, 6 years ago.
What is the penalty if Winstonian Construction 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 Winstonian Construction 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.