- Companies
- Machinery repair and installation
- Dunmow
- Marine Systems (UK) Limited
Marine Systems (UK) Limited
- Company number
- 02835243
- Incorporated
- 12 Jul 199333 years trading
- Registered office
- Tinkers Mead House, Watling Lane, Thaxted, Dunmow, CM6 2QY
- Nature of business
- Repair and maintenance of ships and boats
Marine Systems (UK) Limited is a 33-year-old private limited company registered in Dunmow, company number 02835243, one of 15 machinery repair and installation companies in Dunmow. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 2027.
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 Marine Systems (UK) 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 down £849 (-6.3%) on the year before, to £13K.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £15K against £2,079 owed within a year: 7.1 times cover.
- 1 employee on average, up from 0 the year before.
- 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 Aug 2025 | £13K | £15K | £15K | £2,079 | 1 |
| 31 Aug 2024 | £13K | £24K | £24K | £10K | 0 |
| 31 Aug 2023 | £8,745 | £9,624 | £9,704 | £959 | 0 |
| 31 Aug 2022 | £3,153 | £3,084 | £69 | 2 | |
| 31 Aug 2021 | £9,494 | £10K | £797 | 2 | |
| 31 Aug 2020 | £21K | £25K | £3,934 | 2 | |
| 31 Aug 2019 | £5,201 | £5,202 | £1 | ||
| 31 Aug 2018 | £6,178 | £6,178 | £0 | ||
| 31 Aug 2017 | £11K | £13K | £1,359 | ||
| 31 Aug 2016 | £15K | £27K | £27K | £12K |
Where Marine Systems (UK) Limited is registered
The registered office is in Dunmow (CM6), in the Uttlesford local authority area, East of England. Show CM6 2QY on a map.
Other trade companies in CM6
- Sharpe Trees LtdLandscapers and gardeners
- Aston Cord (Southern) LimitedPlumbers and heating engineers
- Alhs Properties LimitedProperty developers
- Gibson & Co. Contracts LimitedElectricians
- Norson Tyres and Detailing LtdMechanics and garages
- Om Roofing and Building Contractors LtdBuilders
- Z T Auto LtdMotor traders
- Patsons Ac LtdPlumbers and heating engineers
What happens if Marine Systems (UK) 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 02835243
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 July 1993 (33 years ago)
- Registered office
- Tinkers Mead House, Watling Lane, Thaxted, Dunmow, CM6 2QY
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 4 October 2025
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 Dunmow
Other active machinery repair and installation companies registered in Dunmow.
- Pastorfrigor GB Limited2004
- PHR Agricultural Engineering Ltd2019
- S A Jones Contracts Limited2007
- SPC BMS Controls Ltd2022
- Tyrrell Compliance Services Ltd2025
- Bulldog Plant & Equipment Ltd2021
- Complete Tail Lift Solutions Ltd.2017
- Ejpl Limited2011
All machinery repair and installation companies in Dunmow · All trades in Dunmow · Machinery repair and installation across the UK
Frequently asked questions
When are Marine Systems (UK) Limited's accounts due?
Marine Systems (UK) Limited's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Marine Systems (UK) Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Marine Systems (UK) Limited still trading?
Marine Systems (UK) 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 Marine Systems (UK) Limited do?
Marine Systems (UK) Limited is registered under Repair and maintenance of ships and boats (SIC 33150).
How old is Marine Systems (UK) Limited?
Marine Systems (UK) Limited was incorporated on 12 July 1993, 33 years ago.
What is the penalty if Marine Systems (UK) 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 Marine Systems (UK) 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.