- Companies
- Civil engineering
- Elf Groundworks Ltd
Elf Groundworks Ltd
- Company number
- 16197816
- Incorporated
- 21 Jan 20251 year trading
- Registered office
- 1 Hutton Close, South Church Enterprise Park, Co Durham, Bishop Auckland, DL14 6XG
- Nature of business
- Construction of other civil engineering projects n.e.c.
Elf Groundworks Ltd is a 1-year-old private limited company registered in Co Durham, Bishop Auckland, company number 16197816, one of the UK's civil engineering contractors. Its next accounts are due at Companies House on 21 October 2026, and its first CT600 is due at HMRC on 20 January 2027.
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.
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Where Elf Groundworks Ltd is registered
The registered office is in Co Durham, Bishop Auckland (DL14), in the County Durham local authority area, North East. Show DL14 6XG on a map.
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Shared registered office
62 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Elf 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 21 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 22 Oct 2026 to 21 Nov 2026 | £150 |
| 1 to 3 months late | 22 Nov 2026 to 21 Jan 2027 | £375 |
| 3 to 6 months late | 22 Jan 2027 to 21 Apr 2027 | £750 |
| More than 6 months late | From 22 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 16197816
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 January 2025 (1 year ago)
- Registered office
- 1 Hutton Close, South Church Enterprise Park, Co Durham, Bishop Auckland, DL14 6XG
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 20 January 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
Other active civil engineering contractors.
Frequently asked questions
When are Elf Groundworks Ltd's accounts due?
Elf Groundworks Ltd's next accounts are due at Companies House by 21 October 2026 (in 9 days), covering the period to 31 January 2026.
When is Elf 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 20 January 2026, due by 20 January 2027, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Elf Groundworks Ltd still trading?
Elf 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 Elf Groundworks Ltd do?
Elf Groundworks Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Elf Groundworks Ltd?
Elf Groundworks Ltd was incorporated on 21 January 2025, 1 year ago.
What is the penalty if Elf 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 Elf 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.