- Companies
- Machinery repair and installation
- Advanced Tech Marine Ltd
Advanced Tech Marine Ltd
- Company number
- 13861534
- Incorporated
- 20 Jan 20224 years trading
- Registered office
- Dolydd, Fron Heulog, Menai Bridge, LL59 5NA
- Nature of business
- Repair and maintenance of ships and boats
Advanced Tech Marine Ltd is a 4-year-old private limited company registered in Menai Bridge, company number 13861534, one of the UK's machinery repair and installation companies. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £3,163 (+12.3%) on the year before, to £29K.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £29K | £24K | £5,171 | 1 | |
| 31 Jan 2024 | £26K | £18K | £4,532 | 2 | |
| 31 Jan 2023 | £19K | £27K | £8,248 | 2 |
Where Advanced Tech Marine Ltd is registered
The registered office is in Menai Bridge (LL59), in the Isle of Anglesey local authority area, Wales. Show LL59 5NA on a map.
Other trade companies in LL59
- Car Sales NW LtdMotor traders
- Quidos Property Developments LimitedProperty developers
- Calon MÔN Properties LtdProperty developers
- Smyrna Heritage Developments LimitedBuilders
- Skymax Developments & Construction LtdBuilders
- P Brown Electrical LtdElectricians
- Debruin Electrical LtdElectricians
- DLW Plumbing & Heating NW LtdPlumbers and heating engineers
What happens if Advanced Tech Marine 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 13861534
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 January 2022 (4 years ago)
- Registered office
- Dolydd, Fron Heulog, Menai Bridge, LL59 5NA
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 19 January 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
Other active machinery repair and installation companies.
Frequently asked questions
When are Advanced Tech Marine Ltd's accounts due?
Advanced Tech Marine Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Advanced Tech Marine Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Advanced Tech Marine Ltd still trading?
Advanced Tech Marine 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 Advanced Tech Marine Ltd do?
Advanced Tech Marine Ltd is registered under Repair and maintenance of ships and boats (SIC 33150).
How old is Advanced Tech Marine Ltd?
Advanced Tech Marine Ltd was incorporated on 20 January 2022, 4 years ago.
What is the penalty if Advanced Tech Marine 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 Advanced Tech Marine 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.