- Companies
- Machinery repair and installation
- Dunoon
- Dubh Mor Marine Limited
Dubh Mor Marine Limited
- Company number
- SC847368
- Incorporated
- 4 May 20251 year trading
- Registered office
- 14 Kilbride Avenue, Dunoon, PA23 7LH
- Nature of business
- Repair and maintenance of ships and boats; Service activities incidental to water transportation; Engineering related scientific and technical consulting activities
Dubh Mor Marine Limited is a 1-year-old private limited company registered in Dunoon, company number SC847368, one of 6 machinery repair and installation companies in Dunoon. Its next accounts are due at Companies House on 4 February 2027, and its first CT600 is due at HMRC on 3 May 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Who runs and owns Dubh Mor Marine Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** G*** | Director | May 2025 |
Person with significant control
Where Dubh Mor Marine Limited is registered
The registered office is in Dunoon (PA23), in the Argyll and Bute local authority area, Scotland. Show PA23 7LH on a map.
Other trade companies in PA23
- Argyll Management Solutions LtdJoiners and carpenters
- TF Groundworks (Dunoon) LtdGroundworks and demolition
- White Box Cleaning Company LtdCleaning companies
- Kapital Assets LimitedBuilders
- Clyde Coast Exterior Services LtdPainters and decorators
- Af Commercial Diving LtdSpecialist contractors
- Elionis LtdProperty developers
- Maccallums Garage LtdMechanics and garages
What happens if Dubh Mor 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 4 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 Feb 2027 to 4 Mar 2027 | £150 |
| 1 to 3 months late | 5 Mar 2027 to 4 May 2027 | £375 |
| 3 to 6 months late | 5 May 2027 to 4 Aug 2027 | £750 |
| More than 6 months late | From 5 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- SC847368
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 May 2025 (1 year ago)
- Registered office
- 14 Kilbride Avenue, Dunoon, PA23 7LH
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
Service activities incidental to water transportation (SIC 52220)
Engineering related scientific and technical consulting activities (SIC 71122) - Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 3 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 Dunoon
Other active machinery repair and installation companies registered in Dunoon.
- GSW Blade Services Ltd2023
- Leisure Ecosse Ltd.2003
- Mmes Tech Limited2025
- Auto Marine Electrics Ltd.2010
- Caledonian Laser Services Ltd2025
All machinery repair and installation companies in Dunoon · All trades in Dunoon · Machinery repair and installation across the UK
Frequently asked questions
When are Dubh Mor Marine Limited's accounts due?
Dubh Mor Marine Limited's next accounts are due at Companies House by 4 February 2027 (in 114 days), covering the period to 31 May 2026.
When is Dubh Mor Marine Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 3 May 2026, due by 3 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Dubh Mor Marine Limited still trading?
Dubh Mor 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 Dubh Mor Marine Limited do?
Dubh Mor Marine Limited is registered under Repair and maintenance of ships and boats (SIC 33150); Service activities incidental to water transportation (SIC 52220); Engineering related scientific and technical consulting activities (SIC 71122).
How old is Dubh Mor Marine Limited?
Dubh Mor Marine Limited was incorporated on 4 May 2025, 1 year ago.
Who runs Dubh Mor Marine Limited?
Dubh Mor Marine Limited has 1 active director, the longest-serving appointed in May 2025. Their names and service addresses are on the Companies House register.
Who owns Dubh Mor Marine Limited?
One person or company has significant control of Dubh Mor Marine Limited: an individual (owns 75% or more of the shares).
What is the penalty if Dubh Mor 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 Dubh Mor 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.