- Companies
- Civil engineering
- St Neots
- JMCK Rail Ltd
JMCK Rail Ltd
- Company number
- 15020733
- Incorporated
- 22 Jul 20233 years trading
- Registered office
- The A1 Lifestyle Village Great North Road, Little Paxton, St Neots, Cambridgeshire, PE19 6EN
- Nature of business
- Construction of railways and underground railways
JMCK Rail Ltd is a 3-year-old private limited company registered in St Neots, company number 15020733, one of the UK's civil engineering contractors. 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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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 £4,992 (+116.4%) on the year before, to £9,279.
- Current assets of £15K against £9,985 owed within a year: 1.5 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £9,279 | £15K | £9,985 | 1 | |
| 31 Jul 2024 | £4,287 | £20K | £21K | 1 |
Where JMCK Rail Ltd is registered
The registered office is in St Neots (PE19), in the Huntingdonshire local authority area, East of England. Show PE19 6EN on a map.
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What happens if JMCK Rail 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 | 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
- 15020733
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 July 2023 (3 years ago)
- Registered office
- The A1 Lifestyle Village Great North Road, Little Paxton, St Neots, Cambridgeshire, PE19 6EN
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 21 July 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 St Neots
Other active civil engineering contractors registered in St Neots.
All civil engineering contractors in St Neots · All trades in St Neots · Civil engineering across the UK
Frequently asked questions
When are JMCK Rail Ltd's accounts due?
JMCK Rail Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is JMCK Rail Ltd'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 JMCK Rail Ltd still trading?
JMCK Rail 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 JMCK Rail Ltd do?
JMCK Rail Ltd is registered under Construction of railways and underground railways (SIC 42120).
How old is JMCK Rail Ltd?
JMCK Rail Ltd was incorporated on 22 July 2023, 3 years ago.
What is the penalty if JMCK Rail 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 JMCK Rail 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.