- Companies
- Civil engineering
- Ipswich
- Mocon Civils Ltd
Mocon Civils Ltd
- Company number
- 15275258
- Incorporated
- 10 Nov 20232 years trading
- Registered office
- 5 Cardiff Avenue, Ipswich, IP2 8QH
- Nature of business
- Construction of other civil engineering projects n.e.c.
Mocon Civils Ltd is a 2-year-old private limited company registered in Ipswich, company number 15275258, one of 88 civil engineering contractors in Ipswich. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £48K (+684.2%) on the year before, to £41K.
- Current assets of £36K against £16K owed within a year: 2.2 times cover.
- 2 employees on average, up from 0 the year before.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £41K | £36K | £16K | 2 | |
| 30 Nov 2024 | -£7,013 | £5,023 | 0 |
Where Mocon Civils Ltd is registered
The registered office is in Ipswich (IP2), in the Ipswich local authority area, East of England. Show IP2 8QH on a map.
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What happens if Mocon Civils 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 31 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 15275258
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 November 2023 (2 years ago)
- Registered office
- 5 Cardiff Avenue, Ipswich, IP2 8QH
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 9 November 2025
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 Ipswich
Other active civil engineering contractors registered in Ipswich.
- Morph Utilities Ltd2022
- Netelco Ltd2026
- Nexavolt Ltd2025
- Noveus Limited2006
- Oakmont Development SPV1 Limited2025
- Orry TM Ltd2022
- Pallippatt TM Ltd2022
- Pioneer Sustainable Ltd2006
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Frequently asked questions
When are Mocon Civils Ltd's accounts due?
Mocon Civils Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Mocon Civils Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Mocon Civils Ltd still trading?
Mocon Civils 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 Mocon Civils Ltd do?
Mocon Civils Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Mocon Civils Ltd?
Mocon Civils Ltd was incorporated on 10 November 2023, 2 years ago.
What is the penalty if Mocon Civils 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 Mocon Civils 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.