- Companies
- Civil engineering
- Manningtree
- S6 Construction Ltd
S6 Construction Ltd
- Company number
- 15971026
- Incorporated
- 23 Sep 20242 years trading
- Registered office
- Spring Cottage Oakley Road, Wix, Manningtree, Essex, CO11 2SE
- Nature of business
- Construction of other civil engineering projects n.e.c.; Site preparation
S6 Construction Ltd is a 2-year-old private limited company registered in Manningtree, company number 15971026, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 September 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Who runs and owns S6 Construction Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| P*** K*** | Director | Sep 2025 |
2 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| S*** K*** | Director | Sep 2024 | Sep 2025 |
| G*** K*** | Director | Sep 2024 | Sep 2025 |
Person with significant control
Where S6 Construction Ltd is registered
The registered office is in Manningtree (CO11), in the Tendring local authority area, East of England. Show CO11 2SE on a map.
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What happens if S6 Construction 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 15971026
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 September 2024 (2 years ago)
- Registered office
- Spring Cottage Oakley Road, Wix, Manningtree, Essex, CO11 2SE
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Site preparation (SIC 43120) - Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 22 September 2025
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 Manningtree
Other active civil engineering contractors registered in Manningtree.
All civil engineering contractors in Manningtree · All trades in Manningtree · Civil engineering across the UK
Frequently asked questions
When are S6 Construction Ltd's accounts due?
S6 Construction Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is S6 Construction Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is S6 Construction Ltd still trading?
S6 Construction Ltd is listed as active on the Companies House register (checked 12 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 S6 Construction Ltd do?
S6 Construction Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Site preparation (SIC 43120).
How old is S6 Construction Ltd?
S6 Construction Ltd was incorporated on 23 September 2024, 2 years ago.
Who runs S6 Construction Ltd?
S6 Construction Ltd has 1 active director, the longest-serving appointed in Sep 2025. Their names and service addresses are on the Companies House register.
Who owns S6 Construction Ltd?
One person or company has significant control of S6 Construction Ltd: an individual (owns 75% or more of the shares).
What is the penalty if S6 Construction 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 S6 Construction Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.