- Companies
- Civil engineering
- Portsmouth
- Mmcon Limited
Mmcon Limited
- Company number
- 14080431
- Incorporated
- 2 May 20224 years trading
- Registered office
- 43 Armory Lane, Portsmouth, PO1 2PE
- Nature of business
- Construction of roads and motorways
Mmcon Limited is a 4-year-old private limited company registered in Portsmouth, company number 14080431, one of 74 civil engineering contractors in Portsmouth. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
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 £236 (+15.9%) on the year before, to £1,717.
- Current assets of £8,809 against £7,092 owed within a year: 1.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1,717 | £8,809 | £7,092 | 1 | |
| 31 Mar 2024 | £1,481 | £8,543 | 1 | ||
| 31 Mar 2023 | £61 | £9,244 | 1 |
Where Mmcon Limited is registered
The registered office is in Portsmouth (PO1), in the Portsmouth local authority area, South East. Show PO1 2PE on a map.
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What happens if Mmcon 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 14080431
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 May 2022 (4 years ago)
- Registered office
- 43 Armory Lane, Portsmouth, PO1 2PE
- Nature of business
- Construction of roads and motorways (SIC 42110)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 1 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 Portsmouth
Other active civil engineering contractors registered in Portsmouth.
- Mtek Paving & Groundwork Specialists Ltd2023
- Mucworx Limited2024
- P&I Management Services Limited2009
- PM03 Ltd2025
- Precipice Management Ltd2018
- Pro Pave (UK) Limited2002
- Pro Site Engineering Ltd2026
- R & R Civils (South) Ltd2021
All civil engineering contractors in Portsmouth · All trades in Portsmouth · Civil engineering across the UK
Frequently asked questions
When are Mmcon Limited's accounts due?
Mmcon Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Mmcon Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Mmcon Limited still trading?
Mmcon 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 Mmcon Limited do?
Mmcon Limited is registered under Construction of roads and motorways (SIC 42110).
How old is Mmcon Limited?
Mmcon Limited was incorporated on 2 May 2022, 4 years ago.
What is the penalty if Mmcon 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 Mmcon 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.