- Companies
- Machinery repair and installation
- Watt Marine Limited
Watt Marine Limited
- Company number
- SC069936
- Incorporated
- 9 Nov 197946 years trading
- Registered office
- 10 Latheron Centre, Ullapool, Ross-Shire, IV26 2XB
- Nature of business
- Repair and maintenance of ships and boats
Watt Marine Limited is a 46-year-old private limited company registered in Ross-Shire, company number SC069936, one of the UK's machinery repair and installation companies. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £5,916 (+4.2%) on the year before, to £148K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £171K against £71K owed within a year: 2.4 times cover.
- 3 employees on average during the year.
- 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 Mar 2025 | £148K | £171K | £71K | 3 | |
| 31 Mar 2024 | £142K | £147K | £53K | 3 | |
| 31 Mar 2023 | £116K | £127K | £54K | 3 | |
| 31 Mar 2022 | £113K | £129K | £70K | 4 | |
| 31 Mar 2021 | £110K | £101K | £59K | 4 | |
| 31 Mar 2020 | £113K | £124K | £77K | 4 | |
| 31 Mar 2019 | £116K | £138K | £104K | ||
| 31 Mar 2018 | £96K | £87K | £59K | ||
| 31 Mar 2017 | £76K | £77K | £50K | ||
| 31 Mar 2016 | £83K | £29K | £90K | £33K |
Where Watt Marine Limited is registered
The registered office is in Ross-Shire (IV26), in the Highland local authority area, Scotland. Show IV26 2XB on a map.
Other trade companies in IV26
- Ochsner Heat Pump Services LimitedPlumbers and heating engineers
- LVR Construction LimitedBuilders
- Couper Access LtdInstallers
- 264 Solutions LtdRepair services
- S I Ross Surveying LimitedCivil engineering
- Bolands Development LtdProperty developers
- Urquhart Plant Ltd.Specialist contractors
- Ullapool Construction LimitedBuilders
What happens if Watt 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- SC069936
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 November 1979 (46 years ago)
- Registered office
- 10 Latheron Centre, Ullapool, Ross-Shire, IV26 2XB
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 1 October 2025
- Charges (mortgages)
- 4 outstanding of 5 registered
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
Other active machinery repair and installation companies.
Frequently asked questions
When are Watt Marine Limited's accounts due?
Watt Marine Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Watt Marine Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Watt Marine Limited still trading?
Watt 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 Watt Marine Limited do?
Watt Marine Limited is registered under Repair and maintenance of ships and boats (SIC 33150).
How old is Watt Marine Limited?
Watt Marine Limited was incorporated on 9 November 1979, 46 years ago.
What is the penalty if Watt 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 Watt 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.