- Companies
- Specialist contractors
- Dronfield
- Mar Engineering Limited
Mar Engineering Limited
- Company number
- 11150990
- Incorporated
- 15 Jan 20188 years trading
- Registered office
- 6A Stone Road, Coal Aston, Dronfield, Derbyshire, S18 3AH
- Nature of business
- Other specialised construction activities n.e.c.
Mar Engineering Limited is a 8-year-old private limited company registered in Dronfield, company number 11150990, one of 7 specialist construction companies in Dronfield. Companies House shows its accounts as overdue: they were due on 4 January 2026.
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 down £111K (-474.1%) on the year before, to -£87K.
- Net assets rose in 2 of 5 year-on-year comparisons on record.
- Current assets of -£7,754 against £119K owed within a year: -0.1 times cover.
- 8 employees on average during the year.
- Balance sheets on record for 6 years, 2019 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 4 Apr 2024 | -£87K | -£11K | -£7,754 | £119K | 8 |
| 5 Apr 2023 | £23K | £56K | £96K | £53K | 8 |
| 5 Apr 2022 | £97K | £27K | £111K | £33K | 8 |
| 31 Jan 2021 | £32K | £41K | £104K | £76K | 6 |
| 31 Jan 2020 | £64K | £18K | £138K | £83K | 4 |
| 31 Jan 2019 | £30K | £18K | £84K | £62K | 5 |
Where Mar Engineering Limited is registered
The registered office is in Dronfield (S18), in the North East Derbyshire local authority area, East Midlands. Show S18 3AH on a map.
Other trade companies in S18
- D D Cutts LtdMotor traders
- Parkers Property Maintenance LimitedLandscapers and gardeners
- SRH Agri LtdMachinery repair and installation
- Alexander&Cutts LtdMotor traders
- L Morgan Construction LimitedInstallers
- TDZ Electrical Services LtdElectricians
- Jeb Plastering Company LtdPlasterers
- R & R Joinery & Building LtdBuilders
What happens if Mar Engineering Limited files late
If the accounts reach Companies House today, the late filing penalty is £1,500 (£3,000 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 Jan 2026 to 4 Feb 2026 | £150 |
| 1 to 3 months late | 5 Feb 2026 to 4 Apr 2026 | £375 |
| 3 to 6 months late | 5 Apr 2026 to 4 Jul 2026 | £750 |
| More than 6 months late | From 5 Jul 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 5 Apr 2026 | £200 |
| 3 months late | 4 Jul 2026 | another £200 |
| 6 months late | 4 Oct 2026 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 4 Apr 2027 | 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
- 11150990
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 January 2018 (8 years ago)
- Registered office
- 6A Stone Road, Coal Aston, Dronfield, Derbyshire, S18 3AH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 4 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 4 April 2024
- Last confirmation statement
- 14 January 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Dronfield
Other active specialist construction companies registered in Dronfield.
- RH Access Services Ltd2022
- Woods Masonry & Construction Limited2006
- Aet Flood Defence Limited2013
- DC Partitions Ltd2019
- JT Adams Builders by Design Limited2005
- Land & Property Services Ltd2025
All specialist construction companies in Dronfield · All trades in Dronfield · Specialist contractors across the UK
Frequently asked questions
When are Mar Engineering Limited's accounts due?
Mar Engineering Limited's accounts were due at Companies House on 4 January 2026 and the register shows them as overdue.
When is Mar Engineering Limited's CT600 due?
The CT600 for the period to 4 April 2025 is due at HMRC by 4 April 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 5 January 2026.
Is Mar Engineering Limited still trading?
Mar Engineering Limited is listed as active on the Companies House register (checked 12 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 Mar Engineering Limited do?
Mar Engineering Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Mar Engineering Limited?
Mar Engineering Limited was incorporated on 15 January 2018, 8 years ago.
What is the penalty if Mar Engineering 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 Mar Engineering Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.