- Companies
- Groundworks and demolition
- Widnes
- DMPH - Ow Ltd
DMPH - Ow Ltd
- Company number
- 16290327
- Incorporated
- 4 Mar 20251 year trading
- Registered office
- Glebe Business Park, Lunts Heath Road, Widnes, Cheshire, WA8 5SQ
- Nature of business
- Site preparation
DMPH - Ow Ltd is a 1-year-old private limited company registered in Widnes, company number 16290327, one of the UK's groundworks and demolition companies. Its next accounts are due at Companies House on 4 December 2026, and its first CT600 is due at HMRC on 3 March 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 DMPH - Ow Ltd is registered
The registered office is in Widnes (WA8), in the Halton local authority area, North West. Show WA8 5SQ on a map.
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Shared registered office
44 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 DMPH - Ow 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 4 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 Dec 2026 to 4 Jan 2027 | £150 |
| 1 to 3 months late | 5 Jan 2027 to 4 Mar 2027 | £375 |
| 3 to 6 months late | 5 Mar 2027 to 4 Jun 2027 | £750 |
| More than 6 months late | From 5 Jun 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
- 16290327
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 March 2025 (1 year ago)
- Registered office
- Glebe Business Park, Lunts Heath Road, Widnes, Cheshire, WA8 5SQ
- Nature of business
- Site preparation (SIC 43120)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 30 September 2025
Filing notes for groundworks and demolition companies
Groundworks and demolition companies tend to own heavy plant, so capital allowances and hire purchase liabilities show up in both the accounts and the CT600.
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Other active groundworks and demolition companies registered in Widnes.
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Frequently asked questions
When are DMPH - Ow Ltd's accounts due?
DMPH - Ow Ltd's next accounts are due at Companies House by 4 December 2026 (in 53 days), covering the period to 31 March 2026.
When is DMPH - Ow 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 3 March 2026, due by 3 March 2027, 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 DMPH - Ow Ltd still trading?
DMPH - Ow 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 DMPH - Ow Ltd do?
DMPH - Ow Ltd is registered under Site preparation (SIC 43120).
How old is DMPH - Ow Ltd?
DMPH - Ow Ltd was incorporated on 4 March 2025, 1 year ago.
What is the penalty if DMPH - Ow 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 DMPH - Ow 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.