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- Jennerator Limited
Company profile · Installers
Jennerator Limited
Jennerator Limited is a 6-year-old private limited company registered in Ongar, company number 12715005, one of 17 installation companies (insulation, lifts, shutters and similar) in Ongar. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 31 July 2025, as filed at Companies House.
Jennerator Limited over the years
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 £11K (+14.6%) on the year before, to £89K.
- Net assets rose in 4 of 4 year-on-year comparisons on record.
- Current assets of £28K against £2,245 owed within a year: more than 10 times cover.
- 5 employees on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £89K | £28K | £2,245 | 5 | |
| 31 Jul 2024 | £78K | £41K | £5,602 | 5 | |
| 31 Jul 2023 | £72K | £16K | £39K | 3 | |
| 31 Jul 2022 | £71K | £58K | £46K | 3 | |
| 31 Jul 2021 | £32K | £36K | £66K | 3 |
Where Jennerator Limited is registered
The registered office is in Ongar (CM5), in the Epping Forest local authority area, East of England. Show CM5 0GA on a map.
Other trade companies in CM5
- B P Paving & Construction LimitedSpecialist contractors
- Down to Earth Electrical LtdElectricians
- A12 Roofing LimitedRoofers
- Chezman Electrical LtdElectricians
- HSR Portfolio Management LtdProperty developers
- JCS Services Essex LtdPlumbers and heating engineers
- Vogel Tech & Security LimitedElectricians
- Ward & Grace Partners LimitedSpecialist contractors
Also registered at this address
2 other companies use the same registered office as Jennerator Limited.
- Flexible Fire Protection LimitedInstallers
- Health Development Solutions LtdProperty developers
What happens if Jennerator 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 12715005
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 July 2020 (6 years ago)
- Registered office
- Unit 27 the Gables, Fyfield Road, Ongar, CM5 0GA
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 1 July 2026
- Previous names
- Delta CJ Limited (until 21 Jan 2021)
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Ongar
Other active installation companies (insulation, lifts, shutters and similar) registered in Ongar.
- Lmac Fire Systems Limited2017
- Lynch Insulation Limited2004
- MS Fire Protection Ltd2020
- Paragon Contractors Ltd2026
- Preclad Ltd2023
- Skipduct Ltd2019
- Sterling UK Site Services Limited2025
- T G Thermal Limited2017
All installation companies (insulation, lifts, shutters and similar) in Ongar · All trades in Ongar · Installers across the UK
Frequently asked questions
When are Jennerator Limited's accounts due?
Jennerator Limited's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is Jennerator Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Jennerator Limited still trading?
Jennerator 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 Jennerator Limited do?
Jennerator Limited is registered under Other construction installation (SIC 43290).
How old is Jennerator Limited?
Jennerator Limited was incorporated on 2 July 2020, 6 years ago.
What is the penalty if Jennerator 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 Jennerator 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.