Fernbrook Bio Limited
Registered name: FERNBROOK BIO LIMITED
Part of Generate UK Investment Holdings Limited groupFernbrook Bio Limited made £2.7m revenue and a £1.9m loss in the year to 31 Dec 2024.
Fernbrook Bio Limited’s revenue was £2.7m in the year to 31 Dec 2024, with a loss of £1.9m. The company is classified under “treatment and disposal of non-hazardous waste” and is based in London; we hold 3 years of its filed accounts.
- Status
- Active
- Location
- London, East Midlands
- Age
- 18 yrs · since 2008
- 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
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 |
|---|---|---|---|
| Disclosure | No P&L | No P&L | Full P&L |
| Profit & loss | |||
| Revenue (turnover) | — | — | £2.7m |
| Cost of sales | — | — | −£2m |
| Gross profit | — | — | £758k |
| Operating profit | — | — | −£526k |
| Profit before tax | — | — | −£1.4m |
| Profit after tax | — | — | −£1.9m |
| Profit (best available) | — | — | −£1.9m |
| Employees (average) | 0 | 5 | — |
| Ratios | |||
| Profit margin | — | — | −69.8% |
| Gross margin | — | — | 27.6% |
| Balance sheet — indirect signals, not revenue | |||
| Cash at bank | £495k | £4.4m | — |
| Net assets | −£2m | £3.9m | — |
| Fixed assets | £3.1m | £8.7m | — |
| Current assets | £1.3m | £5.5m | — |
| Debtors | £43.1k | £216k | — |
| Source | FullAccounts · bulk data Sep 2024 | FullAccounts · bulk data Sep 2024 | Accounts · bulk data Feb 2026 |
How the business works
- Profit margin
- −69.8%
- Profit ÷ revenue.
- Gross margin
- 27.6%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- —
- Revenue ÷ average employees.
- Profit per employee
- —
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- —
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- —
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- —
- Money owed by customers. Low = customers pay quickly.
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 —
- Cash at bank
- —
- Now —
- Headcount
- —
- Now —
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Group structure
Ownership chain
- Generate UK Investment Holdings Limitedultimate parent75–100%
- Generate UK Ad Holdings Limited75–100%
- Generate UK Ad I Limited75–100%
- Fernbrook Bio Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (4)
- Avg Imperial LtdFigures not disclosed
- Biopower (Hartlepool) LimitedFigures not disclosed
- Buchan Biogas LtdFigures not disclosed
- Material Change Renewable Energy LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
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Sources
Latest figures from accounts for the year to 31 Dec 2024 (profit −£1.9m), from the Companies House accounts bulk data published Feb 2026. Spotted an error? Request a correction.
Updated from Companies House on 17 Oct 2026
Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.