Treatment 4 Water Limited
Registered name: TREATMENT 4 WATER LIMITED
Part of Mariner Topco Limited groupTreatment 4 Water Limited does not publish its revenue or profit. Its accounts to 31 Dec 2025 show net assets of £528k and 6 employees.
Treatment 4 Water Limited did not publish its revenue or profit — small companies aren’t required to file a profit & loss account. Its accounts for the year to 31 Dec 2025 showed net assets of £528k and 6 employees. The company is classified under “manufacture of other chemical products” and is based in Ross-on-Wye; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Ross-on-Wye, West Midlands
- Age
- 20 yrs · since 2005
- Type
- Private Limited Company
Part of a group. The filing indicates this company sits within a group structure, so its results may depend on intra-group trading and it may be hard to replicate independently.
Key figures
Revenue not disclosed
Treatment 4 Water Limited’s accounts for the year to 31 Dec 2025 contain a balance sheet but no profit & loss account, so its revenue and profit are not public. UK small and micro-entity companies are not required to publish a P&L — this is normal and says nothing about how the business is performing.
We never estimate revenue. Below you’ll find the balance-sheet figures that were filed — useful as indirect signals of momentum, but they are not revenue or profit.
- Employees
- 6
- Net assets
- £528k
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 31 Dec 2022 | 31 Dec 2023 | 31 Dec 2024 | 31 Dec 2025 |
|---|---|---|---|---|
| Disclosure | No P&L | No P&L | No P&L | No P&L |
| Profit & loss | ||||
| Revenue (turnover) | — | — | — | — |
| Profit (best available) | — | — | — | — |
| Employees (average) | 4 | 4 | 5 | 6 |
| Ratios | ||||
| Profit margin | — | — | — | — |
| Growth (year on year) | ||||
| Headcount growth | — | 0% | ▲25% | ▲20% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £80.4k | £133k | £135k | £285k |
| Net assets | £44.2k | £81.8k | £297k | £528k |
| Fixed assets | £1.1k | £2.2k | £3k | £2.5k |
| Current assets | £469k | £522k | £744k | £950k |
| Debtors | £264k | £280k | £437k | £474k |
| Source | FullAccounts · bulk data May 2024 | FullAccounts · bulk data May 2024 | FullAccounts · bulk data Jun 2025 | FullAccounts · bulk data Sep 2026 |
Balance-sheet signals
Year-on-year changes in filed balance-sheet items. They can hint at momentum (or investment) but are not revenue or profit and must not be read as such.
- Net assets
- ▲78%
- Now £528k
- Cash at bank
- ▲111%
- Now £285k
- Headcount
- ▲20%
- Now 6
- Deferred income
- —
- Now —
- Fixed assets
- ▼19%
- Now £2.5k
Group structure
Ownership chain
- Mariner Topco Limitedultimate parent75–100%
- Mariner Midco 1 Limited75–100%
- Mariner Midco 2 Limited75–100%
- Mariner Bidco Limited75–100%
- HSL Compliance Group Limited75–100%
- HSL Compliance Holdings Limited75–100%
- Treatment 4 Water Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (16)
- Albanyoak LimitedFigures not disclosed
- Apc Compliance LimitedRev. — · Profit £182k
- Coral Environmental LtdFigures not disclosed
- Crosmill Holdings LtdRev. — · Profit £987k
- Houseman Environmental LimitedRev. — · Profit £507k
- HSL Compliance (Northern Ireland) LimitedFigures not disclosed
- HSL Compliance Advanced Water Technologies LtdRev. — · Profit £704k
- HSL Compliance Enitial LtdFigures not disclosed
- HSL Compliance LtdFigures not disclosed
- HSL Inspection and Testing LtdFigures not disclosed
- Ice Plumbing & Water Services LimitedFigures not disclosed
- Jordan Environmental LimitedFigures not disclosed
- Legionella Control International LimitedFigures not disclosed
- Plexus Innovation LimitedRev. — · Profit £289k
- R J Urmson Group LimitedRev. — · Profit £650k
- Saferspaces LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
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Sources
Latest figures from FullAccounts for the year to 31 Dec 2025, from the Companies House accounts bulk data published Sep 2026. Spotted an error? Request a correction.
Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.