- Companies
- Civil engineering
- Lowestoft
- Suffolk Civil & Marine Ltd
Suffolk Civil & Marine Ltd
- Company number
- 12928353
- Incorporated
- 5 Oct 20206 years trading
- Registered office
- Norfolk Marine, Belvedere Road, Lowestoft, NR33 0PR
- Nature of business
- Construction of other civil engineering projects n.e.c.
Suffolk Civil & Marine Ltd is a 6-year-old private limited company registered in Lowestoft, company number 12928353, one of 33 civil engineering contractors in Lowestoft. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £2,425 (-13.4%) on the year before, to -£21K.
- Net assets rose in 0 of 4 year-on-year comparisons on record.
- Current assets of £861 against £38K owed within a year: 0.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | -£21K | £861 | £38K | 1 | |
| 31 Oct 2024 | -£18K | £3,898 | £4,759 | £40K | 1 |
| 31 Oct 2023 | -£1,349 | £16K | 0 | ||
| 31 Oct 2022 | £9,700 | £24K | £25K | 0 | |
| 31 Oct 2021 | £16K | £25K | £8,619 | 2 |
Where Suffolk Civil & Marine Ltd is registered
The registered office is in Lowestoft (NR33), in the East Suffolk local authority area, East of England. Show NR33 0PR on a map.
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Also registered at this address
1 other company uses the same registered office as Suffolk Civil & Marine Ltd.
- Norfolk Marine and General LimitedMachinery repair and installation
What happens if Suffolk Civil & Marine 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 12928353
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 October 2020 (6 years ago)
- Registered office
- Norfolk Marine, Belvedere Road, Lowestoft, NR33 0PR
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 4 October 2025
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 Lowestoft
Other active civil engineering contractors registered in Lowestoft.
- TP Precision Works Ltd2026
- Tri-Tech Contracting Limited2023
- United Rail Engineering Ltd2023
- Yates & Stroud Utilities Ltd2022
- Alan Howarth Limited1988
- Apex Scaffolding Anglia Ltd1999
- B Mayfield Limited2009
- C. P. Oldman Builder Limited2004
All civil engineering contractors in Lowestoft · All trades in Lowestoft · Civil engineering across the UK
Frequently asked questions
When are Suffolk Civil & Marine Ltd's accounts due?
Suffolk Civil & Marine Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Suffolk Civil & Marine Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Suffolk Civil & Marine Ltd still trading?
Suffolk Civil & Marine 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 Suffolk Civil & Marine Ltd do?
Suffolk Civil & Marine Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Suffolk Civil & Marine Ltd?
Suffolk Civil & Marine Ltd was incorporated on 5 October 2020, 6 years ago.
What is the penalty if Suffolk Civil & Marine 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 Suffolk Civil & Marine 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.