- Companies
- Civil engineering
- Port Talbot
- J D Marine & Sons Limited
J D Marine & Sons Limited
- Company number
- 08142732
- Incorporated
- 13 Jul 201214 years trading
- Registered office
- 58 Mariners Quay, Aberavon, Port Talbot, SA12 6AN
- Nature of business
- Construction of water projects
J D Marine & Sons Limited is a 14-year-old private limited company registered in Port Talbot, company number 08142732, one of 17 civil engineering contractors in Port Talbot. 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 up £165K (+3.7%) on the year before, to £4.6M.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £2M against £206K owed within a year: 9.5 times cover.
- 26 employees on average, down from 29 the year before.
- 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 | £4.6M | £1.2M | £2M | £206K | 26 |
| 31 Jul 2024 | £4.5M | £1.5M | £2.3M | £250K | 29 |
| 31 Jul 2023 | £4.2M | £1.4M | £2.3M | £105K | 26 |
| 31 Jul 2022 | £4.1M | £2.2M | £3.3M | £99K | 0 |
| 31 Jul 2021 | £3.5M | £1.7M | £3.2M | £115K | 0 |
| 31 Jul 2020 | £2.9M | £1.3M | £2.3M | £83K | |
| 31 Jul 2019 | £1.2M | £281K | £903K | £29K | |
| 31 Jul 2018 | £286K | £137K | £47K | ||
| 31 Jul 2017 | £45K | £129K | £60K | ||
| 31 Jul 2016 | £577K | £36K | £135K | £58K |
Who runs and owns J D Marine & Sons Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| R*** D*** | Director | Jul 2012 |
Person with significant control
Charges (secured borrowing)
11 of 21 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Bfs Marine Finance (UK) Limited | Outstanding | Sep 2026 |
| Bfs Marine Finance (UK) Limited | Outstanding | Sep 2026 |
| Bfs Marine Finance (UK) Limited | Outstanding | Sep 2026 |
| Bfs Marine Finance (UK) Limited | Outstanding | Sep 2026 |
| Bfs Marine Finance (UK) Limited | Outstanding | Sep 2026 |
| Bfs Marine Finance (UK) Limited | Outstanding | Sep 2026 |
| Bfs Marine Finance (UK) Limited | Outstanding | Sep 2026 |
| Lloyds Bank PLC As Security Trustee For Each Group Member | Outstanding | Aug 2025 |
| Lloyds Bank PLC As Security Trustee For Itself And Each Of Its Subsidiaries For The Time Being | Outstanding | Aug 2025 |
| Lloyds Bank PLC | Outstanding | Aug 2018 |
| Lloyds Bank Commercial Finance Ltd | Outstanding | Nov 2016 |
| Lloyds Bank PLC | Satisfied Apr 2026 | Sep 2018 |
| Lloyds Bank PLC | Satisfied Apr 2026 | Sep 2018 |
| Shawbrook Bank Limited | Satisfied Oct 2018 | Nov 2016 |
| Shawbrook Bank Limited | Satisfied Oct 2018 | Nov 2016 |
| Shawbrook Bank Limited | Satisfied Oct 2018 | Apr 2016 |
| Shawbrook Bank Limited | Satisfied Oct 2018 | Apr 2016 |
| Aldermore Bank PLC | Satisfied Jul 2018 | Mar 2016 |
| Barclays Bank PLC | Satisfied Jul 2018 | Jun 2013 |
| Close Brothers Limited | Satisfied May 2016 | May 2013 |
| Close Brothers Limited | Satisfied May 2016 | May 2013 |
Where J D Marine & Sons Limited is registered
The registered office is in Port Talbot (SA12), in the Neath Port Talbot local authority area, Wales. Show SA12 6AN on a map.
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- LMG Independent Bath Co LimitedElectricians
- South Wales Heritage Wood Revival LimitedPainters and decorators
- JD Industrial Services LtdCleaning companies
- Sherwood's Carpentry and Building Services LtdBuilders
- CDM Property Ventures LtdProperty developers
- Lawz Fabrications LtdMachinery repair and installation
- Smooth Operators Screeding LtdBuilders
Also registered at this address
1 other company uses the same registered office as J D Marine & Sons Limited.
- JD Group Services LimitedMachinery repair and installation
What happens if J D Marine & Sons 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
- 08142732
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 July 2012 (14 years ago)
- Registered office
- 58 Mariners Quay, Aberavon, Port Talbot, SA12 6AN
- Nature of business
- Construction of water projects (SIC 42910)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 13 July 2026
- Charges (mortgages)
- 11 outstanding of 21 registered
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 Port Talbot
Other active civil engineering contractors registered in Port Talbot.
- Lakewell Utilities Limited2013
- Landscapes Unlimited UK Ltd2018
- MSG Labour & Plant Limited2005
- Olympus Landscapes & Groundworks Ltd2025
- S.J. Controls Limited1999
- SCH Engineering Services Ltd2023
- Wellshill Civils & Plant Limited2016
- 2006 Ltd2015
All civil engineering contractors in Port Talbot · All trades in Port Talbot · Civil engineering across the UK
Frequently asked questions
When are J D Marine & Sons Limited's accounts due?
J D Marine & Sons Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is J D Marine & Sons 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 J D Marine & Sons Limited still trading?
J D Marine & Sons 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 J D Marine & Sons Limited do?
J D Marine & Sons Limited is registered under Construction of water projects (SIC 42910).
How old is J D Marine & Sons Limited?
J D Marine & Sons Limited was incorporated on 13 July 2012, 14 years ago.
Who runs J D Marine & Sons Limited?
J D Marine & Sons Limited has 1 active director, the longest-serving appointed in Jul 2012. Their names and service addresses are on the Companies House register.
Who owns J D Marine & Sons Limited?
One person or company has significant control of J D Marine & Sons Limited: an individual (owns 75% or more of the shares).
What is the penalty if J D Marine & Sons 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 J D Marine & Sons 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.