- Companies
- Civil engineering
- Coventry
- Mac Mining Ltd
Mac Mining Ltd
- Company number
- 14107344
- Incorporated
- 14 May 20224 years trading
- Registered office
- 39 Edward Road, Coventry, CV6 2GS
- Nature of business
- Construction of bridges and tunnels
Mac Mining Ltd is a 4-year-old private limited company registered in Coventry, company number 14107344, one of 112 civil engineering contractors in Coventry. Its next accounts are due at Companies House on 29 February 2028, and the CT600 for the period to 31 May 2027 is due at HMRC on 31 May 2028.
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 £26K (+33.7%) on the year before, to £103K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £157K against £41K owed within a year: 3.9 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2023 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2026 | £103K | £157K | £41K | 1 | |
| 31 May 2025 | £77K | £133K | £41K | 1 | |
| 31 May 2024 | £45K | £58K | £21 | 0 | |
| 31 May 2023 | £22K | £35K | 0 |
Where Mac Mining Ltd is registered
The registered office is in Coventry (CV6), in the Coventry local authority area, West Midlands. Show CV6 2GS on a map.
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What happens if Mac Mining 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 29 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2028 to 31 Mar 2028 | £150 |
| 1 to 3 months late | 1 Apr 2028 to 31 May 2028 | £375 |
| 3 to 6 months late | 1 Jun 2028 to 31 Aug 2028 | £750 |
| More than 6 months late | From 1 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 14107344
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 May 2022 (4 years ago)
- Registered office
- 39 Edward Road, Coventry, CV6 2GS
- Nature of business
- Construction of bridges and tunnels (SIC 42130)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2026
- Last confirmation statement
- 6 May 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Coventry
Other active civil engineering contractors registered in Coventry.
- Mains Infrastructure Construction Limited2025
- Marrens Elite Surfacing Limited2025
- Modha Energy Ltd2024
- MPH Civils Limited2026
- Nate Engineering Ltd2026
- NH Construction Limited2003
- NS Utility Consultants Ltd2023
- Optimhouse Limited2017
All civil engineering contractors in Coventry · All trades in Coventry · Civil engineering across the UK
Frequently asked questions
When are Mac Mining Ltd's accounts due?
Mac Mining Ltd's next accounts are due at Companies House by 29 February 2028 (in 504 days), covering the period to 31 May 2027.
When is Mac Mining Ltd's CT600 due?
The CT600 for the period to 31 May 2027 is due at HMRC by 31 May 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2028.
Is Mac Mining Ltd still trading?
Mac Mining 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 Mac Mining Ltd do?
Mac Mining Ltd is registered under Construction of bridges and tunnels (SIC 42130).
How old is Mac Mining Ltd?
Mac Mining Ltd was incorporated on 14 May 2022, 4 years ago.
What is the penalty if Mac Mining 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 Mac Mining 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.