- Companies
- Civil engineering
- Winchester
- Corinium Construction Limited
Corinium Construction Limited
- Company number
- 05556426
- Incorporated
- 7 Sep 200521 years trading
- Registered office
- 25 ST Thomas Street, Winchester, Hampshire, SO23 9HJ
- Nature of business
- Construction of other civil engineering projects n.e.c.
Corinium Construction Limited is a 21-year-old private limited company registered in Winchester, company number 05556426, one of 16 civil engineering contractors in Winchester. 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.
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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 £195K (+13.2%) on the year before, to £1.7M.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £715K against £390K owed within a year: 1.8 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1.7M | £105K | £715K | £390K | 2 |
| 31 Mar 2024 | £1.5M | £266K | £764K | £505K | 2 |
| 31 Mar 2023 | £1.3M | £843K | £1.6M | £521K | 2 |
| 31 Mar 2022 | £798K | £347K | £1.2M | £500K | 2 |
| 31 Mar 2021 | £310K | £487K | £908K | £659K | 2 |
| 31 Mar 2020 | £114K | £4,657 | £337K | £316K | 2 |
| 31 Mar 2019 | £203K | £22K | £420K | £311K | 2 |
| 31 Mar 2018 | £338K | £79K | £635K | £402K | 2 |
| 31 Mar 2017 | £283K | £18K | £416K | £214K | 2 |
| 31 Mar 2016 | £139K | £35K | £405K | £304K |
Where Corinium Construction Limited is registered
The registered office is in Winchester (SO23), in the Winchester local authority area, South East. Show SO23 9HJ on a map.
Other trade companies in SO23
- Aeronix LimitedPlumbers and heating engineers
- Z Cubic Home LtdJoiners and carpenters
- Fordstone Groundworks & Civil Engineering LtdCivil engineering
- Osr Homes LtdBuilders
- Welborne LS LimitedProperty developers
- Charlecote Sussex LimitedSpecialist contractors
- Shorewood Pankridge Street LtdBuilders
- The Home & Garden Collective LtdBuilders
Shared registered office
32 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 Corinium 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 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
- 05556426
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 September 2005 (21 years ago)
- Registered office
- 25 ST Thomas Street, Winchester, Hampshire, SO23 9HJ
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 24 August 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 Winchester
Other active civil engineering contractors registered in Winchester.
- Crouch Construction Services Limited2021
- Deepwater Marine Services Ltd2025
- First Cone Highways Limited2020
- Fordstone Groundworks & Civil Engineering Ltd2026
- Jenkins Utilities Limited2019
- Lenco Civils Limited2026
- Marjoribanks Consulting Ltd2016
- MRJ Miller Limited2024
All civil engineering contractors in Winchester · All trades in Winchester · Civil engineering across the UK
Frequently asked questions
When are Corinium Construction Limited's accounts due?
Corinium Construction Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Corinium Construction Limited'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 Corinium Construction Limited still trading?
Corinium 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 Corinium Construction Limited do?
Corinium Construction Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Corinium Construction Limited?
Corinium Construction Limited was incorporated on 7 September 2005, 21 years ago.
What is the penalty if Corinium 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 Corinium 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.