- Company number
- 16370363
- Incorporated
- 7 Apr 20251 year trading
- Registered office
- 43 Lower Tail, Watford, WD19 5DD
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Plumbing, heat and air-conditioning installation
Hydrohub Mechanical Ltd is a 1-year-old private limited company registered in Watford, company number 16370363, one of 365 building contractors in Watford. Its next accounts are due at Companies House on 7 January 2027, and its first CT600 is due at HMRC on 6 April 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 Hydrohub Mechanical Ltd is registered
The registered office is in Watford (WD19), in the Three Rivers local authority area, East of England. Show WD19 5DD on a map.
Other trade companies in WD19
- DTVM Security Solutions LtdElectricians
- Scenic Plasterwork’S LtdPlasterers
- Terranova Gardens LtdLandscapers and gardeners
- Synclyst LtdCleaning companies
- Hcdbl Group LtdProperty developers
- Primecore Contracts LimitedBuilders
- Kenworx Plumbing & Heating LtdPlumbers and heating engineers
- Adrclim LimitedBuilders
What happens if Hydrohub Mechanical 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 7 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 8 Jan 2027 to 7 Feb 2027 | £150 |
| 1 to 3 months late | 8 Feb 2027 to 7 Apr 2027 | £375 |
| 3 to 6 months late | 8 Apr 2027 to 7 Jul 2027 | £750 |
| More than 6 months late | From 8 Jul 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
- 16370363
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 April 2025 (1 year ago)
- Registered office
- 43 Lower Tail, Watford, WD19 5DD
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Plumbing, heat and air-conditioning installation (SIC 43220) - Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 6 April 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Watford
Other active building contractors registered in Watford.
- I&D Brickwork Ltd2018
- I&D Estates Ltd2023
- Ideal Carpentry & Building Solutions Ltd2023
- Ig3 Construction Ltd2023
- Image Property Solutions Limited2015
- Imania Limited2016
- Iz Group Construction Ltd2026
- Izzy UK Limited2001
All building contractors in Watford · All trades in Watford · Builders across the UK
Frequently asked questions
When are Hydrohub Mechanical Ltd's accounts due?
Hydrohub Mechanical Ltd's next accounts are due at Companies House by 7 January 2027 (in 86 days), covering the period to 30 April 2026.
When is Hydrohub Mechanical 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 6 April 2026, due by 6 April 2027, and one for the period to 30 April 2026, due by 30 April 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Hydrohub Mechanical Ltd still trading?
Hydrohub Mechanical 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 Hydrohub Mechanical Ltd do?
Hydrohub Mechanical Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Hydrohub Mechanical Ltd?
Hydrohub Mechanical Ltd was incorporated on 7 April 2025, 1 year ago.
What is the penalty if Hydrohub Mechanical 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 Hydrohub Mechanical 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.