- Companies
- Civil engineering
- London
- Jaron Services Ltd
Jaron Services Ltd
- Company number
- 09835265
- Incorporated
- 21 Oct 201510 years trading
- Registered office
- 25A Vicarage Park, London, SE18 7SU
- Nature of business
- Construction of railways and underground railways; Other human health activities
Jaron Services Ltd is a 10-year-old private limited company registered in London, company number 09835265, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 unchanged on the year before, at £5,012.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- 1 employee 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 Oct 2025 | £5,012 | 1 | |||
| 31 Oct 2024 | £5,012 | £0 | £0 | 1 | |
| 31 Oct 2023 | £5,011 | £189 | £2,400 | 1 | |
| 31 Oct 2022 | £5,011 | £189 | £2,400 | 1 | |
| 31 Oct 2021 | £1,225 | £1,988 | £88 | 1 | |
| 31 Oct 2020 | £578 | £2,110 | £688 | 2 | |
| 31 Oct 2019 | £43 | £7,049 | £6,256 | 2 | |
| 31 Oct 2018 | £19 | £7,635 | £6,866 | ||
| 31 Oct 2017 | £12 | £4,399 | £3,637 | ||
| 31 Oct 2016 | £11 | £4,240 | £3,479 |
Where Jaron Services Ltd is registered
The registered office is in London (SE18), in the Greenwich local authority area, London. Show SE18 7SU on a map.
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What happens if Jaron Services 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 09835265
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 October 2015 (10 years ago)
- Registered office
- 25A Vicarage Park, London, SE18 7SU
- Nature of business
- Construction of railways and underground railways (SIC 42120)
Other human health activities (SIC 86900) - Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 20 October 2025
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.
- Jarr Build Ltd2023
- JB Tilers Ltd2013
- JCM Utilities Ltd2018
- Jcoops Ltd2024
- JCR Communications Ltd2022
- JCS Engineering Services Limited2025
- JD Lucas Ltd2015
- Jda Track (Maintenance) Limited2022
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Jaron Services Ltd's accounts due?
Jaron Services Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Jaron Services Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Jaron Services Ltd still trading?
Jaron Services 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 Jaron Services Ltd do?
Jaron Services Ltd is registered under Construction of railways and underground railways (SIC 42120); Other human health activities (SIC 86900).
How old is Jaron Services Ltd?
Jaron Services Ltd was incorporated on 21 October 2015, 10 years ago.
What is the penalty if Jaron Services 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 Jaron Services 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.