- Companies
- Civil engineering
- Potters Bar
- JKS Contracts Limited
JKS Contracts Limited
- Company number
- 06189286
- Incorporated
- 28 Mar 200719 years trading
- Registered office
- Five Ways, 57/59 Hatfield Road, Potters Bar, Hertfordshire, EN6 1HS
- Nature of business
- Construction of other civil engineering projects n.e.c.
JKS Contracts Limited is a 19-year-old private limited company registered in Potters Bar, company number 06189286, one of 15 civil engineering contractors in Potters Bar. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 down £234 (-17.7%) on the year before, to £1,087.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £15K against £15K owed within a year: 1.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £1,087 | £15K | £15K | 2 | |
| 31 Mar 2025 | £1,321 | £20K | £20K | 2 | |
| 31 Mar 2024 | £1,301 | £19K | £20K | 2 | |
| 31 Mar 2023 | £5,345 | £19K | £16K | 3 | |
| 31 Mar 2022 | £859 | £21K | £21K | 3 | |
| 31 Mar 2021 | £7,976 | £19K | £13K | 3 | |
| 31 Mar 2020 | £473 | £14K | £16K | 2 | |
| 31 Mar 2019 | £5,735 | £21K | £18K | ||
| 31 Mar 2018 | £300 | £18K | £22K | ||
| 31 Mar 2017 | £277 | £3,279 | £8,760 |
Who runs and owns JKS Contracts Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| J*** S*** | Director | Mar 2007 |
| M*** S*** | Director | Apr 2010 |
| M*** S*** | Secretary | Mar 2007 |
4 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| Theydon Secretaries Limited | Secretary (company) | Mar 2007 | Mar 2007 |
| J*** E*** | Director | Apr 2010 | Feb 2011 |
| N*** E*** | Director | Apr 2010 | Feb 2011 |
| Theydon Nominees Limited | Nominee director (company) | Mar 2007 | Mar 2007 |
People with significant control (2)
Where JKS Contracts Limited is registered
The registered office is in Potters Bar (EN6), in the Hertsmere local authority area, East of England. Show EN6 1HS on a map.
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Also registered at this address
3 other companies use the same registered office as JKS Contracts Limited.
- Medgold LimitedCivil engineering
- Phlush LtdBuilders
- Thornton Electrical (London) LimitedElectricians
What happens if JKS Contracts 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 06189286
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 March 2007 (19 years ago)
- Registered office
- Five Ways, 57/59 Hatfield Road, Potters Bar, Hertfordshire, EN6 1HS
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 28 March 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 Potters Bar
Other active civil engineering contractors registered in Potters Bar.
- Medgold Limited2005
- Protiuc Construction Ltd2022
- Rengineers Limited2015
- Rise Utilities Ltd2024
- RMP Consultancy Limited2009
- Upturn Solutions Limited2015
- Viva Railway Ltd2024
- Vladif Limited2016
All civil engineering contractors in Potters Bar · All trades in Potters Bar · Civil engineering across the UK
Frequently asked questions
When are JKS Contracts Limited's accounts due?
JKS Contracts Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is JKS Contracts Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is JKS Contracts Limited still trading?
JKS Contracts 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 JKS Contracts Limited do?
JKS Contracts Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is JKS Contracts Limited?
JKS Contracts Limited was incorporated on 28 March 2007, 19 years ago.
Who runs JKS Contracts Limited?
JKS Contracts Limited has 2 active directors, the longest-serving appointed in Mar 2007. Their names and service addresses are on the Companies House register.
Who owns JKS Contracts Limited?
2 people or companies have significant control of JKS Contracts Limited: an individual (owns 50% to 75% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if JKS Contracts 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 JKS Contracts 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.