- Companies
- Civil engineering
- Lincoln
- Mam Groundworks Ltd
Mam Groundworks Ltd
- Company number
- 16076514
- Incorporated
- 12 Nov 20241 year trading
- Registered office
- 12 Hawthorn Avenue, Waddington, Lincoln, LN5 9BH
- Nature of business
- Construction of roads and motorways
Mam Groundworks Ltd is a 1-year-old private limited company registered in Lincoln, company number 16076514, one of 108 civil engineering contractors in Lincoln. Its next accounts are due at Companies House on 12 November 2026, and its first CT600 is due at HMRC on 11 November 2026.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where Mam Groundworks Ltd is registered
The registered office is in Lincoln (LN5), in the North Kesteven local authority area, East Midlands. Show LN5 9BH on a map.
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What happens if Mam Groundworks 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 12 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 13 Nov 2026 to 12 Dec 2026 | £150 |
| 1 to 3 months late | 13 Dec 2026 to 12 Feb 2027 | £375 |
| 3 to 6 months late | 13 Feb 2027 to 12 May 2027 | £750 |
| More than 6 months late | From 13 May 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
- 16076514
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 November 2024 (1 year ago)
- Registered office
- 12 Hawthorn Avenue, Waddington, Lincoln, LN5 9BH
- Nature of business
- Construction of roads and motorways (SIC 42110)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 11 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 Lincoln
Other active civil engineering contractors registered in Lincoln.
- Marriott & Morley Limited2013
- Mas Construction and Drainage Ltd2020
- Master Stonemasons Limited2023
- McDougall Construction Limited2014
- MDR Groundworks Ltd2021
- Meredith Civil Engineering Limited2025
- Meredith Farmers Ltd T/As ST Vincent Civils Ltd2007
- MPT Plant & Transport Limited2021
All civil engineering contractors in Lincoln · All trades in Lincoln · Civil engineering across the UK
Frequently asked questions
When are Mam Groundworks Ltd's accounts due?
Mam Groundworks Ltd's next accounts are due at Companies House by 12 November 2026 (in 30 days), covering the period to 31 March 2026.
When is Mam Groundworks Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 11 November 2025, due by 11 November 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mam Groundworks Ltd still trading?
Mam Groundworks 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 Mam Groundworks Ltd do?
Mam Groundworks Ltd is registered under Construction of roads and motorways (SIC 42110).
How old is Mam Groundworks Ltd?
Mam Groundworks Ltd was incorporated on 12 November 2024, 1 year ago.
What is the penalty if Mam Groundworks 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 Mam Groundworks 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.