Sludge Tek Limited
Registered name: SLUDGE TEK LIMITED
Part of Mitie Group PLC groupSludge Tek Limited does not publish its revenue or profit. Its accounts to 31 Mar 2025 show net assets of £1.7m and 33 employees.
Sludge Tek 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 Mar 2025 showed net assets of £1.7m and 33 employees. The company is classified under “renting and leasing of other machinery, equipment and tangible goods” and is based in London; we hold 3 years of its filed accounts.
- Status
- Active
- Location
- London, London
- Age
- 25 yrs · since 2001
- 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
Sludge Tek Limited’s accounts for the year to 31 Mar 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 profit & loss account — 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
- 33
- Net assets
- £1.7m
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 30 Sep 2022 | 30 Sep 2023 | 31 Mar 2025 |
|---|---|---|---|
| Disclosure | No profit & loss | No profit & loss | No profit & loss |
| Profit & loss | |||
| Revenue (turnover) | — | — | — |
| Profit (best available) | — | — | — |
| Employees (average) | 26 | 25 | 33 |
| Ratios | |||
| Profit margin | — | — | — |
| Growth (year on year) | |||
| Headcount growth | — | ▼3.9% | — |
| Balance sheet — indirect signals, not revenue | |||
| Cash at bank | £1.4m | £1.5m | £901k |
| Net assets | £1.6m | £2.3m | £1.7m |
| Current assets | £2.5m | £3.1m | £2.8m |
| Debtors | £871k | £1.2m | £1.5m |
| Deferred income | £2.7k | £45.7k | £127k |
| Source | FullAccounts · bulk data Jun 2024 | FullAccounts · bulk data Jun 2024 | FullAccounts · bulk data Mar 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
- —
- Now £1.7m
- Cash at bank
- —
- Now £901k
- Headcount
- —
- Now 33
- Deferred income
- —
- Now £127k
- Fixed assets
- —
- Now —
Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.
Group structure
Ownership chain
- Mitie Group PLCultimate parent75–100%
- Mitie Treasury Management Limited75–100%
- Marlowe Limited75–100%
- Marlowe 2016 Limited75–100%
- Marlowe Environmental Services Limited75–100%
- N-OV8 Group Limited75–100%
- WCS Environmental Engineering Ltd75–100%
- Sludge Tek Holdings Limited75–100%
- Sludge Tek Limitedthis company
Bands show the share of ownership each company holds in the one below it.
From the Persons with Significant Control register (corporate controllers only).
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Sources
Latest figures from FullAccounts for the year to 31 Mar 2025, from the Companies House accounts bulk data published Mar 2026. Spotted an error? Request a correction.