- Companies
- Civil engineering
- Fleet
- Zennergy International Ltd
Zennergy International Ltd
- Company number
- 07333258
- Incorporated
- 2 Aug 201016 years trading
- Registered office
- Centaur House Ancells Business Park, Ancells Road, Fleet, GU51 2UJ
- Nature of business
- Construction of utility projects for fluids; Engineering design activities for industrial process and production; Engineering related scientific and technical consulting activities; specialised design activities
Zennergy International Ltd is a 16-year-old private limited company registered in Fleet, company number 07333258, one of 12 civil engineering contractors in Fleet. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £95K (+30.6%) on the year before, to £407K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £905K against £494K owed within a year: 1.8 times cover.
- 5 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 Dec 2025 | £407K | £520K | £905K | £494K | 5 |
| 31 Dec 2024 | £312K | £188K | £521K | £196K | 5 |
| 31 Dec 2023 | £176K | £80K | £392K | £193K | 5 |
| 31 Dec 2022 | £123K | £197K | £755K | £598K | 4 |
| 31 Dec 2021 | £60K | £31K | £268K | £163K | 4 |
| 31 Dec 2020 | £10K | £83K | £739K | £679K | 3 |
| 31 Dec 2019 | £67K | £6,778 | £410K | £343K | 3 |
| 31 Dec 2018 | £63K | £36K | £450K | £389K | 5 |
| 31 Dec 2017 | £39K | £23K | £562K | £524K | 5 |
| 31 Dec 2016 | £142K | £210K | £525K | £390K | 5 |
Where Zennergy International Ltd is registered
The registered office is in Fleet (GU51), in the Hart local authority area, South East. Show GU51 2UJ on a map.
Other trade companies in GU51
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- PG Property Construction LtdBuilders
- Airtek Safety Products LtdSpecialist contractors
- Aircon & Home Solutions LtdPlumbers and heating engineers
- Usacar One LtdMotor traders
- Easy Drainage LtdCleaning companies
- Rooferholics LimitedRoofers
- Sureguard UK P&E LimitedCleaning companies
Also registered at this address
1 other company uses the same registered office as Zennergy International Ltd.
- Mitchellwheeler LimitedInstallers
What happens if Zennergy International 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 07333258
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 August 2010 (16 years ago)
- Registered office
- Centaur House Ancells Business Park, Ancells Road, Fleet, GU51 2UJ
- Nature of business
- Construction of utility projects for fluids (SIC 42210)
Engineering design activities for industrial process and production (SIC 71121)
Engineering related scientific and technical consulting activities (SIC 71122)
specialised design activities (SIC 74100) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 2 August 2026
- Charges (mortgages)
- 0 outstanding of 4 registered
- Previous names
- Zenergy International Limited (until 10 Jan 2011)
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 Fleet
Other active civil engineering contractors registered in Fleet.
- Bhawani Planning & Project Controls Ltd2017
- DKMD Ltd2015
- GJK Traffic Management Ltd2022
- Mja Utilities Ltd2018
- Novabell Limited2002
- Oscar Construction & Civil Engineering Ltd2021
- Phoenixc Ltd2015
- Phoenixc North & Midlands Limited2017
All civil engineering contractors in Fleet · All trades in Fleet · Civil engineering across the UK
Frequently asked questions
When are Zennergy International Ltd's accounts due?
Zennergy International Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Zennergy International Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Zennergy International Ltd still trading?
Zennergy International 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 Zennergy International Ltd do?
Zennergy International Ltd is registered under Construction of utility projects for fluids (SIC 42210); Engineering design activities for industrial process and production (SIC 71121); Engineering related scientific and technical consulting activities (SIC 71122); specialised design activities (SIC 74100).
How old is Zennergy International Ltd?
Zennergy International Ltd was incorporated on 2 August 2010, 16 years ago.
What is the penalty if Zennergy International 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 Zennergy International 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.