- Companies
- Civil engineering
- Hounslow
- J3S Infra Ltd
J3S Infra Ltd
- Company number
- 10847462
- Incorporated
- 3 Jul 20179 years trading
- Registered office
- Vista Business Centre,, 2ND Floor, 2B-Part, Block B,, Hounslow, TW4 6JQ
- Nature of business
- Construction of other civil engineering projects n.e.c.; Electrical installation; Other building completion and finishing; Security systems service activities
J3S Infra Ltd is a 9-year-old private limited company registered in Hounslow, company number 10847462, one of 26 civil engineering contractors in Hounslow. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 30 July 2026 is due at HMRC on 30 July 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 £160K (+207.5%) on the year before, to £83K.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £41K against £79K owed within a year: 0.5 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jul 2025 | £83K | £41K | £79K | 0 | |
| 30 Jul 2024 | -£77K | £15K | £91K | 1 | |
| 30 Jul 2023 | -£74K | £29K | £102K | 1 | |
| 30 Jul 2022 | £23K | £114K | £89K | 1 | |
| 30 Jul 2021 | £21K | £57K | £36K | 1 | |
| 30 Jul 2020 | £10K | £44K | £34K | 0 | |
| 30 Jul 2019 | £85 | £11K | £11K | ||
| 30 Jul 2018 | £1,019 | £12K | £11K |
Where J3S Infra Ltd is registered
The registered office is in Hounslow (TW4), in the Hounslow local authority area, London. Show TW4 6JQ on a map.
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Also registered at this address
4 other companies use the same registered office as J3S Infra Ltd.
- A&H Vehicles LtdMotor traders
- Ahluwaliabuilders LtdBuilders
- Level Up UK Builders LtdBuilders
- Macvion UK LtdBuilders
What happens if J3S Infra 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 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 | 31 Jul 2027 | £200 |
| 3 months late | 30 Oct 2027 | another £200 |
| 6 months late | 30 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 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
- 10847462
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 July 2017 (9 years ago)
- Registered office
- Vista Business Centre,, 2ND Floor, 2B-Part, Block B,, Hounslow, TW4 6JQ
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Electrical installation (SIC 43210)
Other building completion and finishing (SIC 43390)
Security systems service activities (SIC 80200) - Year end
- 30 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 July 2025
- Last confirmation statement
- 15 January 2026
- Previous names
- Ibru Ltd (until 16 Jan 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 Hounslow
Other active civil engineering contractors registered in Hounslow.
- JK One Builders Ltd2014
- LKM Projects Ltd2015
- MH Utilities Limited2019
- Michalak Construction Ltd2018
- Pca Solutions Ltd2025
- Pro Unic Ltd2016
- PRV Design Ltd2007
- Rin Property Management Ltd2020
All civil engineering contractors in Hounslow · All trades in Hounslow · Civil engineering across the UK
Frequently asked questions
When are J3S Infra Ltd's accounts due?
J3S Infra Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 30 July 2026.
When is J3S Infra Ltd's CT600 due?
The CT600 for the period to 30 July 2026 is due at HMRC by 30 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is J3S Infra Ltd still trading?
J3S Infra 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 J3S Infra Ltd do?
J3S Infra Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Electrical installation (SIC 43210); Other building completion and finishing (SIC 43390); Security systems service activities (SIC 80200).
How old is J3S Infra Ltd?
J3S Infra Ltd was incorporated on 3 July 2017, 9 years ago.
What is the penalty if J3S Infra 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 J3S Infra 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.