- Companies
- Civil engineering
- Port Talbot
- DKM Groundworks Ltd
DKM Groundworks Ltd
- Company number
- 15645602
- Incorporated
- 14 Apr 20242 years trading
- Registered office
- 17 Kern Close, Port Talbot, West Glamorgan, SA12 7SS
- Nature of business
- Construction of other civil engineering projects n.e.c.
DKM Groundworks Ltd is a 2-year-old private limited company registered in Port Talbot, company number 15645602, one of 17 civil engineering contractors in Port Talbot. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 April 2025, as filed at Companies House.
Where DKM Groundworks Ltd is registered
The registered office is in Port Talbot (SA12), in the Neath Port Talbot local authority area, Wales. Show SA12 7SS on a map.
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What happens if DKM 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 15645602
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 April 2024 (2 years ago)
- Registered office
- 17 Kern Close, Port Talbot, West Glamorgan, SA12 7SS
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 13 April 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 Port Talbot
Other active civil engineering contractors registered in Port Talbot.
- J D Marine & Sons Limited2012
- Lakewell Utilities Limited2013
- Landscapes Unlimited UK Ltd2018
- MSG Labour & Plant Limited2005
- Olympus Landscapes & Groundworks Ltd2025
- S.J. Controls Limited1999
- SCH Engineering Services Ltd2023
- Wellshill Civils & Plant Limited2016
All civil engineering contractors in Port Talbot · All trades in Port Talbot · Civil engineering across the UK
Frequently asked questions
When are DKM Groundworks Ltd's accounts due?
DKM Groundworks Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is DKM Groundworks Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is DKM Groundworks Ltd still trading?
DKM 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 DKM Groundworks Ltd do?
DKM Groundworks Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is DKM Groundworks Ltd?
DKM Groundworks Ltd was incorporated on 14 April 2024, 2 years ago.
What is the penalty if DKM 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 DKM 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.