- Companies
- Civil engineering
- RDW Rail Limited
RDW Rail Limited
- Company number
- 12148445
- Incorporated
- 9 Aug 20197 years trading
- Registered office
- 24 Woburn Close, Balby, DN4 9ER
- Nature of business
- Construction of railways and underground railways
RDW Rail Limited is a 7-year-old private limited company registered in Balby, company number 12148445, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £9,309 (+9.3%) on the year before, to £109K.
- Net assets rose in 6 of 6 year-on-year comparisons on record.
- Current assets of £111K against £4,821 owed within a year: more than 10 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2020 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £109K | £101K | £111K | £4,821 | 1 |
| 31 Aug 2025 | £100K | £86K | £102K | £5,509 | 1 |
| 31 Aug 2024 | £87K | £80K | £97K | £10K | 1 |
| 31 Aug 2023 | £63K | £42K | £70K | £7,115 | 1 |
| 31 Aug 2022 | £41K | £37K | £51K | £10K | 1 |
| 31 Aug 2021 | £19K | £14K | £28K | £9,051 | 1 |
| 31 Aug 2020 | £5,135 | £18K | £12K | 1 |
Where RDW Rail Limited is registered
The registered office is in Balby (DN4), in the Doncaster local authority area, Yorkshire and The Humber. Show DN4 9ER on a map.
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What happens if RDW Rail 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 12148445
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 August 2019 (7 years ago)
- Registered office
- 24 Woburn Close, Balby, DN4 9ER
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 8 August 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
Other active civil engineering contractors.
Frequently asked questions
When are RDW Rail Limited's accounts due?
RDW Rail Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is RDW Rail Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is RDW Rail Limited still trading?
RDW Rail 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 RDW Rail Limited do?
RDW Rail Limited is registered under Construction of railways and underground railways (SIC 42120).
How old is RDW Rail Limited?
RDW Rail Limited was incorporated on 9 August 2019, 7 years ago.
What is the penalty if RDW Rail 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 RDW Rail 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.