- Companies
- Machinery repair and installation
- Plymouth
- R.M Marine Engineering Ltd
R.M Marine Engineering Ltd
- Company number
- 17437966
- Incorporated
- 4 Sep 2026
- Registered office
- 10 Well Hay Close, Plymouth, PL9 8DT
- Nature of business
- Repair and maintenance of ships and boats
R.M Marine Engineering Ltd is a newly incorporated private limited company registered in Plymouth, company number 17437966, one of 98 machinery repair and installation companies in Plymouth. Its next accounts are due at Companies House on 4 June 2028, and its first CT600 is due at HMRC on 3 September 2028.
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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Where R.M Marine Engineering Ltd is registered
The registered office is in Plymouth (PL9), in the Plymouth local authority area, South West. Show PL9 8DT on a map.
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What happens if R.M Marine Engineering 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 4 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 Jun 2028 to 4 Jul 2028 | £150 |
| 1 to 3 months late | 5 Jul 2028 to 4 Sep 2028 | £375 |
| 3 to 6 months late | 5 Sep 2028 to 4 Dec 2028 | £750 |
| More than 6 months late | From 5 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 17437966
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 September 2026
- Registered office
- 10 Well Hay Close, Plymouth, PL9 8DT
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
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 Plymouth
Other active machinery repair and installation companies registered in Plymouth.
- Rakman Ltd2020
- RC Motorhomes Ltd2021
- Ryan Jenkins Electrical Limited2024
- S.M.P. Pipe Systems Limited1997
- S.Scott Mechanical Services Limited2014
- Setag Holdings Ltd2020
- Setag Yachts Ltd2020
- Sharpedge Hart Ltd2016
All machinery repair and installation companies in Plymouth · All trades in Plymouth · Machinery repair and installation across the UK
Frequently asked questions
When are R.M Marine Engineering Ltd's accounts due?
R.M Marine Engineering Ltd's next accounts are due at Companies House by 4 June 2028 (in 600 days), covering the period to 30 September 2027.
When is R.M Marine Engineering Ltd'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 September 2027, due by 3 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is R.M Marine Engineering Ltd still trading?
R.M Marine Engineering 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 R.M Marine Engineering Ltd do?
R.M Marine Engineering Ltd is registered under Repair and maintenance of ships and boats (SIC 33150).
How old is R.M Marine Engineering Ltd?
R.M Marine Engineering Ltd was incorporated on 4 September 2026, less than a year ago.
What is the penalty if R.M Marine Engineering 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 R.M Marine Engineering 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.