- Companies
- Civil engineering
- Durham
- Mudd Construction Ltd
Mudd Construction Ltd
- Company number
- 12892954
- Incorporated
- 21 Sep 20206 years trading
- Registered office
- 21 Cook Avenue, Bearpark, Durham, DH7 7BB
- Nature of business
- Construction of other civil engineering projects n.e.c.
Mudd Construction Ltd is a 6-year-old private limited company registered in Durham, company number 12892954, one of 121 civil engineering contractors in Durham. 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 down £9,835 (-65.6%) on the year before, to £5,149.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £24K against £4,728 owed within a year: 5.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £5,149 | £1,231 | £24K | £4,728 | 1 |
| 31 Mar 2024 | £15K | £2,093 | £33K | £1,615 | 1 |
| 31 Mar 2023 | £20K | £1,268 | £40K | £1,230 | 1 |
| 31 Mar 2022 | £41K | £43K | £1,675 | 1 | |
| 31 Mar 2021 | £17K | £13K | £26K | £7,747 | 1 |
Where Mudd Construction Ltd is registered
The registered office is in Durham (DH7), in the County Durham local authority area, North East. Show DH7 7BB on a map.
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Also registered at this address
2 other companies use the same registered office as Mudd Construction Ltd.
- CB Groundworks Ne LtdCivil engineering
- T Bryan Groundworks LtdBuilders
What happens if Mudd Construction 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 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
- 12892954
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 September 2020 (6 years ago)
- Registered office
- 21 Cook Avenue, Bearpark, Durham, DH7 7BB
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 6 September 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 Durham
Other active civil engineering contractors registered in Durham.
- NC Utilities & Groundworks Ltd2026
- Neg Construction Ltd2017
- Neresin Ltd2023
- Newstreet Groundwork Services Limited2019
- NJS Multi Utilities Limited2026
- North East Safety Ltd2026
- North Yorkshire Groundworks & Landscapes Ltd2026
- Northern Tar Services Ltd2025
All civil engineering contractors in Durham · All trades in Durham · Civil engineering across the UK
Frequently asked questions
When are Mudd Construction Ltd's accounts due?
Mudd Construction Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Mudd Construction Ltd'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 Mudd Construction Ltd still trading?
Mudd Construction Ltd 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 Mudd Construction Ltd do?
Mudd Construction Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Mudd Construction Ltd?
Mudd Construction Ltd was incorporated on 21 September 2020, 6 years ago.
What is the penalty if Mudd Construction 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 Mudd Construction Ltd 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.