- Companies
- Civil engineering
- London
- Winchester Energy Reserve Limited
Winchester Energy Reserve Limited
- Company number
- 12286512
- Incorporated
- 29 Oct 20196 years trading
- Registered office
- 3RD Floor, South Building, 200 Aldersgate Street, London, EC1A 4HD
- Nature of business
- Construction of utility projects for electricity and telecommunications
Winchester Energy Reserve Limited is a 6-year-old private limited company registered in London, company number 12286512, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 31 January 2028, and the CT600 for the period to 30 April 2027 is due at HMRC on 30 April 2028.
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 down £1,545 (-27.1%) on the year before, to -£7,249.
- Net assets rose in 0 of 5 year-on-year comparisons on record.
- Current assets of £12K against £292K owed within a year: 0.0 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2026 | -£7,249 | £12K | £292K | 3 | |
| 31 Oct 2024 | -£5,704 | £7,010 | £181K | 3 | |
| 31 Oct 2023 | -£4,314 | £14K | £120K | 3 | |
| 31 Oct 2022 | -£2,907 | £3,700 | £41K | 3 | |
| 31 Oct 2021 | -£1,871 | £2,414 | £23K | 3 | |
| 31 Oct 2020 | -£800 | £88 | 2 |
Where Winchester Energy Reserve Limited is registered
The registered office is in London (EC1A), in the City of London local authority area, London. Show EC1A 4HD on a map.
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Also registered at this address
1 other company uses the same registered office as Winchester Energy Reserve Limited.
- Haboki LimitedFacilities management
What happens if Winchester Energy Reserve 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 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2028 to 29 Feb 2028 | £150 |
| 1 to 3 months late | 1 Mar 2028 to 30 Apr 2028 | £375 |
| 3 to 6 months late | 1 May 2028 to 31 Jul 2028 | £750 |
| More than 6 months late | From 1 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 12286512
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 October 2019 (6 years ago)
- Registered office
- 3RD Floor, South Building, 200 Aldersgate Street, London, EC1A 4HD
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2026
- Last confirmation statement
- 28 October 2025
- Previous names
- BGW4 Limited (until 24 Jun 2021)
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 London
Other active civil engineering contractors registered in London.
- Wirehubz Ltd2019
- Wirral Pipeline Contractors Ltd2025
- Wit Construction Limited2009
- Wiziko Limited2019
- WJB Ground Works Limited2014
- Woj&Woj Ltd2021
- Woods Resurfacing & Utilities Ltd2021
- Woosteruk Property Limited2025
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Winchester Energy Reserve Limited's accounts due?
Winchester Energy Reserve Limited's next accounts are due at Companies House by 31 January 2028 (in 475 days), covering the period to 30 April 2027.
When is Winchester Energy Reserve Limited's CT600 due?
The CT600 for the period to 30 April 2027 is due at HMRC by 30 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2028.
Is Winchester Energy Reserve Limited still trading?
Winchester Energy Reserve 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 Winchester Energy Reserve Limited do?
Winchester Energy Reserve Limited is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is Winchester Energy Reserve Limited?
Winchester Energy Reserve Limited was incorporated on 29 October 2019, 6 years ago.
What is the penalty if Winchester Energy Reserve 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 Winchester Energy Reserve 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.