- Companies
- Installers
- London
- Hydrom Ltd
Hydrom Ltd
- Company number
- 12610404
- Incorporated
- 19 May 20206 years trading
- Registered office
- 81 Newlands Road, London, SW16 4SU
- Nature of business
- Other construction installation
Hydrom Ltd is a 6-year-old private limited company registered in London, company number 12610404, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 29 February 2028, and the CT600 for the period to 31 May 2027 is due at HMRC on 31 May 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £2,955 (-561.8%) on the year before, to -£3,481.
- Net assets rose in 1 of 5 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2021 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2026 | -£3,481 | £3,481 | 1 | ||
| 31 May 2025 | -£526 | £0 | £526 | 1 | |
| 31 May 2024 | £1,216 | £4,712 | £3,496 | 1 | |
| 31 May 2023 | £1 | £1 | |||
| 31 May 2022 | £1 | £1 | |||
| 31 May 2021 | £1 | £1 |
Where Hydrom Ltd is registered
The registered office is in London (SW16), in the Croydon local authority area, London. Show SW16 4SU on a map.
Other trade companies in SW16
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- South Refurb LtdFinishing trades
- Carroza Motors LtdMechanics and garages
- N.L. Unique Home LtdBuilders
- MD Flooring Specialists LtdFloor and wall tilers
- Aman Cleaning LtdCleaning companies
- Infinity Buildings LimitedBuilders
- Cleaning Perfect London LtdCleaning companies
What happens if Hydrom 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 29 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2028 to 31 Mar 2028 | £150 |
| 1 to 3 months late | 1 Apr 2028 to 31 May 2028 | £375 |
| 3 to 6 months late | 1 Jun 2028 to 31 Aug 2028 | £750 |
| More than 6 months late | From 1 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 2029 | 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
- 12610404
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 May 2020 (6 years ago)
- Registered office
- 81 Newlands Road, London, SW16 4SU
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2026
- Last confirmation statement
- 11 June 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- HZQ Construction UK Limited2023
- I C Glazing Ltd2024
- I D Fire Protection Ltd2018
- I Plus Projects Ltd2021
- I-Connect Systems Ltd2020
- Iad CCTV Ltd2025
- Ib Lift Installation Ltd2018
- Iba Projects Ltd2019
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Hydrom Ltd's accounts due?
Hydrom Ltd's next accounts are due at Companies House by 29 February 2028 (in 505 days), covering the period to 31 May 2027.
When is Hydrom Ltd's CT600 due?
The CT600 for the period to 31 May 2027 is due at HMRC by 31 May 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2028.
Is Hydrom Ltd still trading?
Hydrom 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 Hydrom Ltd do?
Hydrom Ltd is registered under Other construction installation (SIC 43290).
How old is Hydrom Ltd?
Hydrom Ltd was incorporated on 19 May 2020, 6 years ago.
What is the penalty if Hydrom 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 Hydrom 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.