- Companies
- Machinery repair and installation
- Portsmouth
- Portsmouth Marine Services Ltd
Portsmouth Marine Services Ltd
- Company number
- 12995694
- Incorporated
- 4 Nov 20205 years trading
- Registered office
- 350-352 London Road, Portsmouth, PO2 9JY
- Nature of business
- Repair and maintenance of ships and boats
Portsmouth Marine Services Ltd is a 5-year-old private limited company registered in Portsmouth, company number 12995694, one of 55 machinery repair and installation companies in Portsmouth. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £5,478 (-14.6%) on the year before, to £32K.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £7,549 against £1,389 owed within a year: 5.4 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 |
|---|---|---|---|---|---|
| 30 Nov 2025 | £32K | £7,549 | £1,389 | 1 | |
| 30 Nov 2024 | £38K | £1,991 | £357 | 1 | |
| 30 Nov 2023 | £23K | £613 | £7,308 | 1 | |
| 30 Nov 2022 | £35K | £2,479 | £5,493 | 1 | |
| 30 Nov 2021 | £20 | £24K | 1 |
Where Portsmouth Marine Services Ltd is registered
The registered office is in Portsmouth (PO2), in the Portsmouth local authority area, South East. Show PO2 9JY on a map.
Other trade companies in PO2
- South Coast Garden Rooms LtdBuilders
- Novira Automotive LtdMotor traders
- Tony Parrack Fire Protection LtdSpecialist contractors
- Bmgcarpentry LtdJoiners and carpenters
- LLPG Carpentry LtdBuilders
- Xyz Developments LtdProperty developers
- Eco Amend Maintenance Service LtdFinishing trades
- Manila Haulage LtdMechanics and garages
Shared registered office
54 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Portsmouth Marine 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 12995694
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 November 2020 (5 years ago)
- Registered office
- 350-352 London Road, Portsmouth, PO2 9JY
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 3 November 2025
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Portsmouth
Other active machinery repair and installation companies registered in Portsmouth.
- Prime Engineering Solutions Ltd2022
- R&S Tech Ltd2016
- Remas HDG Ltd2011
- Rodent Air Limited2024
- RS Outboards Limited2003
- Rusty Rails Limited2016
- S & C Motors Ltd2019
- Sailblue Ltd2017
All machinery repair and installation companies in Portsmouth · All trades in Portsmouth · Machinery repair and installation across the UK
Frequently asked questions
When are Portsmouth Marine Services Ltd's accounts due?
Portsmouth Marine Services Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Portsmouth Marine Services Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Portsmouth Marine Services Ltd still trading?
Portsmouth Marine 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 Portsmouth Marine Services Ltd do?
Portsmouth Marine Services Ltd is registered under Repair and maintenance of ships and boats (SIC 33150).
How old is Portsmouth Marine Services Ltd?
Portsmouth Marine Services Ltd was incorporated on 4 November 2020, 5 years ago.
What is the penalty if Portsmouth Marine 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 Portsmouth Marine 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.