- Companies
- Civil engineering
- Southend-on-Sea
- Datum Rail UK Limited
Datum Rail UK Limited
- Company number
- 11374959
- Incorporated
- 22 May 20188 years trading
- Registered office
- Cumberland House, 24 - 28 Baxter Avenue, Southend-on-Sea, Essex, SS2 6HZ
- Nature of business
- Construction of railways and underground railways
Datum Rail UK Limited is a 8-year-old private limited company registered in Southend-on-Sea, company number 11374959, one of 26 civil engineering contractors in Southend-on-Sea. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £2,060 (-61.6%) on the year before, to £1,286.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £16K against £15K owed within a year: 1.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £1,286 | £956 | £16K | £15K | 1 |
| 31 May 2024 | £3,346 | £1,973 | £17K | £14K | 1 |
| 31 May 2023 | £2,472 | £2,054 | £15K | £12K | 1 |
| 31 May 2022 | £933 | £2,156 | £12K | £12K | 1 |
| 31 May 2021 | £21K | £24K | £36K | £15K | 1 |
| 31 May 2020 | £13K | £25K | £38K | £25K | 1 |
| 31 May 2019 | £14K | £12K | £19K | £4,741 |
Where Datum Rail UK Limited is registered
The registered office is in Southend-on-Sea (SS2), in the Southend-on-Sea local authority area, East of England. Show SS2 6HZ on a map.
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Shared registered office
134 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Datum Rail UK 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 11374959
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 May 2018 (8 years ago)
- Registered office
- Cumberland House, 24 - 28 Baxter Avenue, Southend-on-Sea, Essex, SS2 6HZ
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 21 May 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 Southend-on-Sea
Other active civil engineering contractors registered in Southend-on-Sea.
- David Ali Limited2005
- Direct Instal Ltd2025
- Flowfix Central Limited2025
- Flowfix South East Limited2025
- Ispf Pipework Limited2022
- Jesko Consulting Ltd2025
- Kelly Formwork Rail (UK) Limited2016
- London Guidewall Contractors Limited2017
All civil engineering contractors in Southend-on-Sea · All trades in Southend-on-Sea · Civil engineering across the UK
Frequently asked questions
When are Datum Rail UK Limited's accounts due?
Datum Rail UK Limited's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is Datum Rail UK Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Datum Rail UK Limited still trading?
Datum Rail UK 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 Datum Rail UK Limited do?
Datum Rail UK Limited is registered under Construction of railways and underground railways (SIC 42120).
How old is Datum Rail UK Limited?
Datum Rail UK Limited was incorporated on 22 May 2018, 8 years ago.
What is the penalty if Datum Rail UK 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 Datum Rail UK 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.