- Companies
- Civil engineering
- Harwich
- Dmo Rail Limited
Dmo Rail Limited
- Company number
- 13391881
- Incorporated
- 12 May 20215 years trading
- Registered office
- 24 Seafield Road, Harwich, CO12 4EH
- Nature of business
- Construction of railways and underground railways; Construction of other civil engineering projects n.e.c.
Dmo Rail Limited is a 5-year-old private limited company registered in Harwich, company number 13391881, one of 12 civil engineering contractors in Harwich. 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 up £2,828 (+9.8%) on the year before, to £32K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £376K against £348K owed within a year: 1.1 times cover.
- 4 employees on average, up from 3 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £32K | £376K | £348K | 4 | |
| 31 May 2024 | £29K | £223K | £202K | 3 | |
| 31 May 2023 | £15K | £114K | 2 | ||
| 31 May 2022 | £116 | £12K | 1 |
Where Dmo Rail Limited is registered
The registered office is in Harwich (CO12), in the Tendring local authority area, East of England. Show CO12 4EH on a map.
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What happens if Dmo 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 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
- 13391881
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 May 2021 (5 years ago)
- Registered office
- 24 Seafield Road, Harwich, CO12 4EH
- Nature of business
- Construction of railways and underground railways (SIC 42120)
Construction of other civil engineering projects n.e.c. (SIC 42990) - Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 26 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 in Harwich
Other active civil engineering contractors registered in Harwich.
- Inland Waterways Specialists Ltd2021
- Jaguar Love Ltd2019
- JH Traffic Limited2023
- Marine Construction & Lifting Consultants Ltd2023
- SDB Signalling Limited2017
- Soluli Ltd2013
- T & L Surveying Limited2013
- A.Smith & Sons (Building) Limited1991
All civil engineering contractors in Harwich · All trades in Harwich · Civil engineering across the UK
Frequently asked questions
When are Dmo Rail Limited's accounts due?
Dmo Rail Limited's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is Dmo Rail 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 Dmo Rail Limited still trading?
Dmo 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 Dmo Rail Limited do?
Dmo Rail Limited is registered under Construction of railways and underground railways (SIC 42120); Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Dmo Rail Limited?
Dmo Rail Limited was incorporated on 12 May 2021, 5 years ago.
What is the penalty if Dmo 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 Dmo 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.