- Companies
- Machinery repair and installation
- Pwllheli
- William Partington Marine Limited
William Partington Marine Limited
- Company number
- 00602441
- Incorporated
- 9 Apr 195868 years trading
- Registered office
- The Harbour, Pwllheli, North Wales, LL53 5AY
- Nature of business
- Repair and maintenance of ships and boats
William Partington Marine Limited is a 68-year-old private limited company registered in Pwllheli, company number 00602441, one of 14 machinery repair and installation companies in Pwllheli. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £34K (-7.3%) on the year before, to £435K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £208K against £25K owed within a year: 8.3 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 Dec 2025 | £435K | £81K | £208K | £25K | 0 |
| 31 Dec 2024 | £469K | £80K | £217K | £34K | 0 |
| 31 Dec 2023 | £452K | £69K | £200K | £47K | 5 |
| 31 Dec 2022 | £470K | £52K | £175K | £20K | 6 |
| 31 Dec 2021 | £498K | £142K | £251K | £37K | 8 |
| 31 Dec 2020 | £471K | £61K | £173K | £41K | 6 |
| 31 Dec 2019 | £458K | £75K | £212K | £75K | 6 |
| 31 Dec 2018 | £488K | £262K | £391K | £101K | 6 |
| 31 Dec 2017 | £239K | £66K | £204K | £148K | 6 |
| 31 Dec 2016 | £288K | £20K | £181K | £122K | 6 |
Who runs and owns William Partington Marine Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| W*** P*** | Director | Jun 1993 |
| S*** W*** | Director | Apr 1998 |
| J*** M*** | Director | Apr 2018 |
4 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| W*** P*** | Secretary | Dec 2014 | |
| S*** W*** | Secretary | Dec 2014 | Aug 2016 |
| F*** P*** | Director | Jul 1994 | |
| W*** P*** | Director | Dec 2014 |
People with significant control (2)
Where William Partington Marine Limited is registered
The registered office is in Pwllheli (LL53), in the Gwynedd local authority area, Wales. Show LL53 5AY on a map.
Other trade companies in LL53
- E Thomas Plumbing and Heating Plymio A Gwresogi CyfPlumbers and heating engineers
- Cadelio CyfSpecialist contractors
- Halpine Construction LimitedJoiners and carpenters
- Feucht Engineering LtdMachinery repair and installation
- Stuart Livingstone LtdPlumbers and heating engineers
- Teiars Hughes Tyres LtdMechanics and garages
- Saevar Solutions LtdCleaning companies
- Dragon Detailing & Body Repairs LtdMotor traders
What happens if William Partington 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 00602441
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 April 1958 (68 years ago)
- Registered office
- The Harbour, Pwllheli, North Wales, LL53 5AY
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 12 May 2026
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 Pwllheli
Other active machinery repair and installation companies registered in Pwllheli.
- Abersoch Boat Works Limited2023
- Abersoch Marine and Charter Limited2018
- Bluewater Marine ( North Wales) Ltd2012
- Feucht Engineering Ltd2026
- Firmhelm Limited1977
- Greenearth Hydro Limited2010
- Idealboat Sales Pwllheli Limited2012
- Llyn Atvs Ltd2020
All machinery repair and installation companies in Pwllheli · All trades in Pwllheli · Machinery repair and installation across the UK
Frequently asked questions
When are William Partington Marine Limited's accounts due?
William Partington Marine Limited's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is William Partington Marine Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is William Partington Marine Limited still trading?
William Partington 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 William Partington Marine Limited do?
William Partington Marine Limited is registered under Repair and maintenance of ships and boats (SIC 33150).
How old is William Partington Marine Limited?
William Partington Marine Limited was incorporated on 9 April 1958, 68 years ago.
Who runs William Partington Marine Limited?
William Partington Marine Limited has 3 active directors, the longest-serving appointed in Jun 1993. Their names and service addresses are on the Companies House register.
Who owns William Partington Marine Limited?
2 people or companies have significant control of William Partington Marine Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if William Partington 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 William Partington 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.