Mars Eng. Ltd
- Company number
- 17453956
- Incorporated
- 11 Sep 2026
- Registered office
- 1 Heathview Cottage, Hamble Lane, Southampton, SO31 8BR
- Nature of business
- Repair of machinery; Other engineering activities
Mars Eng. Ltd is a newly incorporated private limited company registered in Southampton, company number 17453956, one of 224 machinery repair and installation companies in Southampton. Its next accounts are due at Companies House on 11 June 2028, and its first CT600 is due at HMRC on 10 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.
Is this your company?
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Where Mars Eng. Ltd is registered
The registered office is in Southampton (SO31), in the Eastleigh local authority area, South East. Show SO31 8BR on a map.
Other trade companies in SO31
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- Amc Plumbing and Heating LtdPlumbers and heating engineers
- Pride & Bloom LtdLandscapers and gardeners
- Hampshire Heating and Cooling LtdPlumbers and heating engineers
- Kelpie Landscape & Build LtdFinishing trades
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- Fitton & Redding Services LimitedMechanics and garages
- Earltech Flooring LtdFloor and wall tilers
What happens if Mars Eng. 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 11 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 12 Jun 2028 to 11 Jul 2028 | £150 |
| 1 to 3 months late | 12 Jul 2028 to 11 Sep 2028 | £375 |
| 3 to 6 months late | 12 Sep 2028 to 11 Dec 2028 | £750 |
| More than 6 months late | From 12 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
- 17453956
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 September 2026
- Registered office
- 1 Heathview Cottage, Hamble Lane, Southampton, SO31 8BR
- Nature of business
- Repair of machinery (SIC 33120)
Other engineering activities (SIC 71129) - 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 Southampton
Other active machinery repair and installation companies registered in Southampton.
- Marshall Elevator Services Ltd2007
- Mech-Elec Marine Ltd2019
- Meon Valley Mowers Ltd2021
- Micks Motor Repairs and Tyres. Limited2013
- Miclee Solutions Ltd2020
- MJB Fleet Maintenance Ltd2025
- ML Masts and Rigging Ltd2024
- MMD-UK Ltd2024
All machinery repair and installation companies in Southampton · All trades in Southampton · Machinery repair and installation across the UK
Frequently asked questions
When are Mars Eng. Ltd's accounts due?
Mars Eng. Ltd's next accounts are due at Companies House by 11 June 2028 (in 608 days), covering the period to 30 September 2027.
When is Mars Eng. 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 10 September 2027, due by 10 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 Mars Eng. Ltd still trading?
Mars Eng. 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 Mars Eng. Ltd do?
Mars Eng. Ltd is registered under Repair of machinery (SIC 33120); Other engineering activities (SIC 71129).
How old is Mars Eng. Ltd?
Mars Eng. Ltd was incorporated on 11 September 2026, less than a year ago.
What is the penalty if Mars Eng. 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 Mars Eng. 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.