- Companies
- Civil engineering
- Southampton
- WN Construction Limited
WN Construction Limited
- Company number
- 10136709
- Incorporated
- 20 Apr 201610 years trading
- Registered office
- Tagus House, 9 Ocean Way, Southampton, Hampshire, SO14 3TJ
- Nature of business
- Construction of other civil engineering projects n.e.c.
WN Construction Limited is a 10-year-old private limited company registered in Southampton, company number 10136709, one of 114 civil engineering contractors in Southampton. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 up £43K on the year before, to £43K.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £178K against £126K owed within a year: 1.4 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £43K | £0 | £178K | £126K | 1 |
| 30 Apr 2024 | £664 | £2,273 | £50K | £42K | 1 |
| 30 Apr 2023 | £524 | £27K | £69K | £61K | 1 |
| 30 Apr 2022 | £1,677 | £14K | £102K | £91K | 1 |
| 30 Apr 2021 | £146 | £12K | £65K | £54K | 1 |
| 30 Apr 2020 | £5,626 | £8,867 | £34K | £36K | 1 |
| 30 Apr 2019 | £1,504 | £5,137 | £28K | £29K | 1 |
| 30 Apr 2018 | £381 | £2,204 | £5,657 | £7,752 | |
| 30 Apr 2017 | £37K | £52K | £60K | £25K |
Where WN Construction Limited is registered
The registered office is in Southampton (SO14), in the Southampton local authority area, South East. Show SO14 3TJ on a map.
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Shared registered office
83 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if WN Construction 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 10136709
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 April 2016 (10 years ago)
- Registered office
- Tagus House, 9 Ocean Way, Southampton, Hampshire, SO14 3TJ
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 1 April 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 Southampton
Other active civil engineering contractors registered in Southampton.
- WSCC Limited2013
- XK Structures Ltd2020
- Zemytm Ltd2026
- 3 Counties Civil Engineering Limited2000
- A Builder (Netley) Limited2007
- Advanced Watering Systems Ltd2023
- Af Grounds & Fencing Ltd2025
- Aimac Construction Limited2025
All civil engineering contractors in Southampton · All trades in Southampton · Civil engineering across the UK
Frequently asked questions
When are WN Construction Limited's accounts due?
WN Construction Limited's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is WN Construction Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is WN Construction Limited still trading?
WN Construction 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 WN Construction Limited do?
WN Construction Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is WN Construction Limited?
WN Construction Limited was incorporated on 20 April 2016, 10 years ago.
What is the penalty if WN Construction 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 WN Construction 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.