- Companies
- Civil engineering
- London
- Marine and Civil Services Ltd
Marine and Civil Services Ltd
- Company number
- 11833105
- Incorporated
- 18 Feb 20197 years trading
- Registered office
- 495 Green Lanes, London, N13 4BS
- Nature of business
- Construction of other civil engineering projects n.e.c.
Marine and Civil Services Ltd is a 7-year-old private limited company registered in London, company number 11833105, one of 1,853 civil engineering contractors in London. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £27K (-21.4%) on the year before, to £101K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £263K against £181K owed within a year: 1.4 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £101K | £209K | £263K | £181K | 1 |
| 30 Jun 2024 | £128K | £94K | £212K | £115K | 1 |
| 30 Jun 2023 | £268K | £75K | £371K | £140K | 1 |
| 30 Jun 2022 | £194K | £226K | £294K | £102K | 1 |
| 30 Jun 2021 | £47K | £31K | £81K | £34K | 1 |
| 30 Jun 2020 | £11K | £40K | £41K | £31K | 1 |
Where Marine and Civil Services Ltd is registered
The registered office is in London (N13), in the Enfield local authority area, London. Show N13 4BS on a map.
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Also registered at this address
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What happens if Marine and Civil Services 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 11833105
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 February 2019 (7 years ago)
- Registered office
- 495 Green Lanes, London, N13 4BS
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 17 February 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 London
Other active civil engineering contractors registered in London.
- Marine Shipbuilding Company UK Ltd2014
- Mark Badu Limited2015
- Mark Bowen Construction Limited2012
- Martin Redston Associates Limited2016
- Martin Structural Engineers Limited2025
- Martindale Marine Consultants Ltd2025
- Martins Digging World Limited2025
- Martyn Ltd.2015
All civil engineering contractors in London · All trades in London · Civil engineering across the UK
Frequently asked questions
When are Marine and Civil Services Ltd's accounts due?
Marine and Civil Services Ltd's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Marine and Civil Services Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Marine and Civil Services Ltd still trading?
Marine and Civil Services 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 Marine and Civil Services Ltd do?
Marine and Civil Services Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Marine and Civil Services Ltd?
Marine and Civil Services Ltd was incorporated on 18 February 2019, 7 years ago.
What is the penalty if Marine and Civil Services 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 Marine and Civil Services 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.