- Companies
- Civil engineering
- South Shields
- Southbay Marine Limited
Southbay Marine Limited
- Company number
- 06324609
- Incorporated
- 25 Jul 200719 years trading
- Registered office
- Unit 214 South Shields Business Works, Henry Robson Way, South Shields, Tyne & Wear, NE33 1RF
- Nature of business
- Construction of water projects; Construction of other civil engineering projects n.e.c.
Southbay Marine Limited is a 19-year-old private limited company registered in South Shields, company number 06324609, one of 25 civil engineering contractors in South Shields. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £64K (-29.6%) on the year before, to £153K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £728K against £26K owed within a year: more than 10 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £153K | £112K | £728K | £26K | 0 |
| 31 Jul 2024 | £217K | £233K | £378K | £96K | 0 |
| 31 Jul 2023 | £212K | £15K | £283K | £108K | 1 |
| 31 Jul 2022 | £160K | £150K | £224K | £109K | 1 |
| 31 Jul 2021 | £102K | £133K | £249K | £104K | 1 |
| 31 Jul 2020 | -£39K | £80K | £302K | £226K | 2 |
| 31 Jul 2019 | £55K | -£1,733 | £120K | £209K | 2 |
| 31 Jul 2018 | £32K | £42K | £100K | £209K | 2 |
| 31 Jul 2017 | £85K | £33K | £78K | £31K | 2 |
| 31 Jul 2016 | £74K | £45K | £101K | £67K |
Where Southbay Marine Limited is registered
The registered office is in South Shields (NE33), in the South Tyneside local authority area, North East. Show NE33 1RF on a map.
Other trade companies in NE33
- MJG. Marine LimitedCivil engineering
- Deep Sea Developments LtdProperty developers
- Mfsupliesltd LtdPainters and decorators
- Blueflame Ne LimitedPlumbers and heating engineers
- Turbine Technical Support and Operations LtdElectricians
- Aablfm LimitedSpecialist contractors
- Mia Automotive LtdMotor traders
- South Tyneside Coachworks LimitedMechanics and garages
Also registered at this address
3 other companies use the same registered office as Southbay Marine Limited.
- JC Quay LtdProperty developers
- Sfi Development LtdCivil engineering
- Southbay Civil Engineering LimitedCivil engineering
What happens if Southbay Marine 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 06324609
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 July 2007 (19 years ago)
- Registered office
- Unit 214 South Shields Business Works, Henry Robson Way, South Shields, Tyne & Wear, NE33 1RF
- Nature of business
- Construction of water projects (SIC 42910)
Construction of other civil engineering projects n.e.c. (SIC 42990) - Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 29 June 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 South Shields
Other active civil engineering contractors registered in South Shields.
- Bryanwood Ltd2024
- C J Y Telecoms Ltd2019
- Compac Services (Ne) Limited1988
- D J Robinson Engineering Limited2014
- G.I. Green Civil Engineering Limited2005
- Harrison Property Maintenance Services Ltd2017
- Ian Jewitt Marine Services Ltd2014
- Ki Commercial Services Limited2015
All civil engineering contractors in South Shields · All trades in South Shields · Civil engineering across the UK
Frequently asked questions
When are Southbay Marine Limited's accounts due?
Southbay Marine Limited's next accounts are due at Companies House by 30 April 2027 (in 198 days), covering the period to 31 July 2026.
When is Southbay Marine Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Southbay Marine Limited still trading?
Southbay Marine 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 Southbay Marine Limited do?
Southbay Marine Limited is registered under Construction of water projects (SIC 42910); Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Southbay Marine Limited?
Southbay Marine Limited was incorporated on 25 July 2007, 19 years ago.
What is the penalty if Southbay Marine 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 Southbay Marine 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.