- Companies
- Civil engineering
- Oldham
- Deep Drainage UK Ltd
Deep Drainage UK Ltd
- Company number
- 15974411
- Incorporated
- 24 Sep 20242 years trading
- Registered office
- 435 Shaw Road, Royton, Oldham, OL2 6PB
- Nature of business
- Construction of other civil engineering projects n.e.c.
Deep Drainage UK Ltd is a 2-year-old private limited company registered in Oldham, company number 15974411, one of 69 civil engineering contractors in Oldham. Its next accounts are due at Companies House on 18 December 2026, and its first CT600 is due at HMRC on 23 September 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.
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Where Deep Drainage UK Ltd is registered
The registered office is in Oldham (OL2), in the Oldham local authority area, North West. Show OL2 6PB on a map.
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What happens if Deep Drainage UK 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 18 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 19 Dec 2026 to 18 Jan 2027 | £150 |
| 1 to 3 months late | 19 Jan 2027 to 18 Mar 2027 | £375 |
| 3 to 6 months late | 19 Mar 2027 to 18 Jun 2027 | £750 |
| More than 6 months late | From 19 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Sep 2026 | £200 |
| 3 months late | 29 Dec 2026 | another £200 |
| 6 months late | 29 Mar 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Sep 2027 | 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
- 15974411
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 September 2024 (2 years ago)
- Registered office
- 435 Shaw Road, Royton, Oldham, OL2 6PB
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 29 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 17 July 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 Oldham
Other active civil engineering contractors registered in Oldham.
- Delta International Engineering Limited1991
- DJ Civil Engineering Limited2014
- Future Energy Networks Ltd2022
- Glenstones Limited2005
- Heat Art Limited2010
- Helphub Services Ltd2024
- Hopkinson Civil Engineering Limited2003
- JDG Civils Ltd2017
All civil engineering contractors in Oldham · All trades in Oldham · Civil engineering across the UK
Frequently asked questions
When are Deep Drainage UK Ltd's accounts due?
Deep Drainage UK Ltd's next accounts are due at Companies House by 18 December 2026 (in 66 days), covering the period to 29 September 2025.
When is Deep Drainage UK 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 23 September 2025, due by 23 September 2026, and one for the period to 29 September 2025, due by 29 September 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Deep Drainage UK Ltd still trading?
Deep Drainage UK 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 Deep Drainage UK Ltd do?
Deep Drainage UK Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Deep Drainage UK Ltd?
Deep Drainage UK Ltd was incorporated on 24 September 2024, 2 years ago.
What is the penalty if Deep Drainage UK 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 Deep Drainage UK 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.