- Companies
- Civil engineering
- Dunoon
- Mirren Marine Limited
Mirren Marine Limited
- Company number
- SC474440
- Incorporated
- 4 Apr 201412 years trading
- Registered office
- 16 Cedar Croft, Hunters Quay, Dunoon, PA23 8HP
- Nature of business
- Construction of water projects; Sea and coastal passenger water transport
Mirren Marine Limited is a 12-year-old private limited company registered in Dunoon, company number SC474440, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 31 January 2028, and the CT600 for the period to 30 April 2027 is due at HMRC on 30 April 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Mirren Marine LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £282K (+57.1%) on the year before, to £776K.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £97K against £28K owed within a year: 3.4 times cover.
- 3 employees on average, down from 6 the year before.
- Balance sheets on record for 10 years, 2016 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2026 | £776K | £17K | £97K | £28K | 3 |
| 30 Apr 2025 | £494K | £18K | £122K | £108K | 6 |
| 30 Apr 2024 | £555K | £30K | £117K | £97K | 1 |
| 30 Apr 2022 | £315K | £149K | £58K | 2 | |
| 30 Apr 2021 | £87K | £24K | £8,955 | 1 | |
| 30 Apr 2020 | £84K | £13K | £61K | 1 | |
| 30 Apr 2019 | £98K | £33K | £72K | ||
| 30 Apr 2018 | £59K | £22K | £86K | ||
| 30 Apr 2017 | £58K | £618 | £28K | £97K | |
| 30 Apr 2016 | £83K | £2,890 | £15K | £29K |
Where Mirren Marine Limited is registered
The registered office is in Dunoon (PA23), in the Argyll and Bute local authority area, Scotland. Show PA23 8HP 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 Mirren 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 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2028 to 29 Feb 2028 | £150 |
| 1 to 3 months late | 1 Mar 2028 to 30 Apr 2028 | £375 |
| 3 to 6 months late | 1 May 2028 to 31 Jul 2028 | £750 |
| More than 6 months late | From 1 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 2029 | 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
- SC474440
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 April 2014 (12 years ago)
- Registered office
- 16 Cedar Croft, Hunters Quay, Dunoon, PA23 8HP
- Nature of business
- Construction of water projects (SIC 42910)
Sea and coastal passenger water transport (SIC 50100) - Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2026
- Last confirmation statement
- 4 April 2026
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 Dunoon
Other active civil engineering contractors registered in Dunoon.
All civil engineering contractors in Dunoon · All trades in Dunoon · Civil engineering across the UK
Frequently asked questions
When are Mirren Marine Limited's accounts due?
Mirren Marine Limited's next accounts are due at Companies House by 31 January 2028 (in 474 days), covering the period to 30 April 2027.
When is Mirren Marine Limited's CT600 due?
The CT600 for the period to 30 April 2027 is due at HMRC by 30 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2028.
Is Mirren Marine Limited still trading?
Mirren 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 Mirren Marine Limited do?
Mirren Marine Limited is registered under Construction of water projects (SIC 42910); Sea and coastal passenger water transport (SIC 50100).
How old is Mirren Marine Limited?
Mirren Marine Limited was incorporated on 4 April 2014, 12 years ago.
What is the penalty if Mirren 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 Mirren 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.