- Companies
- Groundworks and demolition
- Hemel Hempstead
- Poseidon Groundworks Ltd
Poseidon Groundworks Ltd
- Company number
- 16716215
- Incorporated
- 15 Sep 20251 year trading
- Registered office
- 1C Amberside House Wood Lane, Paradise Industrial Estate, Hemel Hempstead, HP2 4TP
- Nature of business
- Site preparation; Other construction installation; Other specialised construction activities n.e.c.
Poseidon Groundworks Ltd is a 1-year-old private limited company registered in Hemel Hempstead, company number 16716215, one of 14 groundworks and demolition companies in Hemel Hempstead. Its next accounts are due at Companies House on 15 June 2027, and its first CT600 is due at HMRC on 14 September 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 Poseidon Groundworks Ltd is registered
The registered office is in Hemel Hempstead (HP2), in the Dacorum local authority area, East of England. Show HP2 4TP on a map.
Other trade companies in HP2
- Prime Carpet Cleaning Experts LtdCleaning companies
- House to Home Builders LtdBuilders
- Gabriel Curic LtdCivil engineering
- Morya Holdings LtdProperty developers
- Construction by Nick LtdSpecialist contractors
- Ayzat Cleaning Solutions LimitedCleaning companies
- Thompsons Prowash LtdCleaning companies
- Herts Paving & Landscapes LtdSpecialist contractors
Also registered at this address
15 other companies use the same registered office as Poseidon Groundworks Ltd.
- Aha Developments (Hillside) LimitedProperty developers
- Apollo Decorating Services LtdPainters and decorators
- BFL International LtdFacilities management
- Dan Construction & Landscapes LtdProperty developers
- Demeter Landscaping Services LtdLandscapers and gardeners
- DH Carpenter & Joinery LtdInstallers
- DLG Plumbing & Heating LtdPlumbers and heating engineers
- Grove Park Autos LtdMotor traders
- Jackson Facilities Management LtdFacilities management
- Lorimer-O'Neill Grab & Groundworks LtdCivil engineering
- Mail Civils LtdCivil engineering
- MJH Plastering LtdInstallers
- PK Decor Services LtdInstallers
- Pressure Pros (Herts) LtdCleaning companies
- TRJ Facilities LtdFacilities management
What happens if Poseidon 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 15 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 16 Jun 2027 to 15 Jul 2027 | £150 |
| 1 to 3 months late | 16 Jul 2027 to 15 Sep 2027 | £375 |
| 3 to 6 months late | 16 Sep 2027 to 15 Dec 2027 | £750 |
| More than 6 months late | From 16 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 16716215
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 September 2025 (1 year ago)
- Registered office
- 1C Amberside House Wood Lane, Paradise Industrial Estate, Hemel Hempstead, HP2 4TP
- Nature of business
- Site preparation (SIC 43120)
Other construction installation (SIC 43290)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 14 September 2026
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.
Similar companies in Hemel Hempstead
Other active groundworks and demolition companies registered in Hemel Hempstead.
- Ross Demolition Limited2003
- Swain Stone Paving Ltd2025
- Versatile Demolition Limited2022
- Azmini Consulting Ltd2018
- Chipro Limited2000
- Cretanu Services Ltd2026
- D&H Excavations Ltd2026
- Expedite Construction & Management Solutions Ltd2013
All groundworks and demolition companies in Hemel Hempstead · All trades in Hemel Hempstead · Groundworks and demolition across the UK
Frequently asked questions
When are Poseidon Groundworks Ltd's accounts due?
Poseidon Groundworks Ltd's next accounts are due at Companies House by 15 June 2027 (in 245 days), covering the period to 30 September 2026.
When is Poseidon 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 14 September 2026, due by 14 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Poseidon Groundworks Ltd still trading?
Poseidon 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 Poseidon Groundworks Ltd do?
Poseidon Groundworks Ltd is registered under Site preparation (SIC 43120); Other construction installation (SIC 43290); Other specialised construction activities n.e.c. (SIC 43999).
How old is Poseidon Groundworks Ltd?
Poseidon Groundworks Ltd was incorporated on 15 September 2025, 1 year ago.
What is the penalty if Poseidon 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 Poseidon 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.