- Companies
- Civil engineering
- London
- Jhonnyx Limited
Jhonnyx Limited
- Company number
- 15521928
- Incorporated
- 26 Feb 20242 years trading
- Registered office
- 581 High Road Leytonstone, London, E11 4PB
- Nature of business
- Construction of utility projects for electricity and telecommunications; Management consultancy activities other than financial management
Jhonnyx Limited is a 2-year-old private limited company registered in London, company number 15521928, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 30 November 2027, and the CT600 for the period to 28 February 2027 is due at HMRC on 28 February 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 £1,356 (-12.2%) on the year before, to £9,738.
- Current assets of £9,798 against £60 owed within a year: more than 10 times cover.
- 5 employees on average during the year.
- Balance sheets on record for 2 years, 2025 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2026 | £9,738 | £9,798 | £60 | 5 | |
| 28 Feb 2025 | £11K | £14K | £2,931 | 5 |
Where Jhonnyx Limited is registered
The registered office is in London (E11), in the Waltham Forest local authority area, London. Show E11 4PB on a map.
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Also registered at this address
2 other companies use the same registered office as Jhonnyx Limited.
- Light Connect LtdCivil engineering
- MGP Ground Works LtdSpecialist contractors
What happens if Jhonnyx 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 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2027 to 31 Dec 2027 | £150 |
| 1 to 3 months late | 1 Jan 2028 to 29 Feb 2028 | £375 |
| 3 to 6 months late | 1 Mar 2028 to 31 May 2028 | £750 |
| More than 6 months late | From 1 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 15521928
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 February 2024 (2 years ago)
- Registered office
- 581 High Road Leytonstone, London, E11 4PB
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
Management consultancy activities other than financial management (SIC 70229) - Year end
- 29 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2026
- Last confirmation statement
- 29 January 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 London
Other active civil engineering contractors registered in London.
- Jimmytta Limited2017
- JJ Traffic Control Ltd2026
- Jjec Corporation Ltd2023
- Jjjbrothersplumbing.Com Limited2021
- JJM Utilities Ltd2010
- Jkander Ltd2014
- JLB Electrical Contractor Ltd2020
- JM Hodgetts Limited2018
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Jhonnyx Limited's accounts due?
Jhonnyx Limited's next accounts are due at Companies House by 30 November 2027 (in 413 days), covering the period to 28 February 2027.
When is Jhonnyx Limited's CT600 due?
The CT600 for the period to 28 February 2027 is due at HMRC by 28 February 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2027.
Is Jhonnyx Limited still trading?
Jhonnyx 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 Jhonnyx Limited do?
Jhonnyx Limited is registered under Construction of utility projects for electricity and telecommunications (SIC 42220); Management consultancy activities other than financial management (SIC 70229).
How old is Jhonnyx Limited?
Jhonnyx Limited was incorporated on 26 February 2024, 2 years ago.
What is the penalty if Jhonnyx 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 Jhonnyx 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.