T4 Sustainability Limited
Registered name: T4 SUSTAINABILITY LIMITED
T4 Sustainability Limited made £593k revenue and £37.9k profit in the year to 31 Mar 2025.
T4 Sustainability Limited’s revenue grew 71% to £593k in the year to 31 Mar 2025, with £37.9k profit and 7 employees. The company is classified under “manufacture of electronic measuring, testing etc. equipment, not for industrial process control” and is based in Ilkeston; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Ilkeston, East Midlands
- Age
- 24 yrs · since 2002
- Type
- Private Limited Company
Key figures
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 31 Mar 2022 | 31 Mar 2023 | 31 Mar 2024 | 31 Mar 2025 |
|---|---|---|---|---|
| Disclosure | No P&L | No P&L | Full P&L | Full P&L |
| Profit & loss | ||||
| Revenue (turnover) | — | — | £348k | £593k |
| Cost of sales | — | — | £239k | £296k |
| Gross profit | — | — | £108k | £297k |
| Operating profit | — | — | −£91.2k | £37.2k |
| Profit before tax | — | — | −£90.4k | £37.9k |
| Profit after tax | — | — | −£90.4k | £37.9k |
| Profit (best available) | — | — | −£90.4k | £37.9k |
| Employees (average) | 4 | 5 | 6 | 7 |
| Ratios | ||||
| Profit margin | — | — | −26% | 6.4% |
| Gross margin | — | — | 31.1% | 50% |
| Revenue per employee | — | — | £58k | £84.8k |
| Profit per employee | — | — | −£15.1k | £5.4k |
| Growth (year on year) | ||||
| Revenue growth | — | — | — | ▲70.6% |
| Headcount growth | — | ▲25% | ▲20% | ▲16.7% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | — | — | £1.1k | £6.2k |
| Net assets | £20.6k | £14.7k | −£75.7k | −£37.8k |
| Fixed assets | £9.8k | £9k | £7.6k | £6.6k |
| Current assets | £67k | £42.2k | £46.2k | £71.4k |
| Debtors | — | — | £17.1k | £31k |
| Deferred income | £4.5k | £3.7k | £0 | £2.2k |
| Source | Accounts · bulk data Dec 2023 | Accounts · bulk data Dec 2023 | AbridgedAccounts · bulk data Dec 2024 | FullAccounts · bulk data Jan 2026 |
How the business works
- Profit margin
- 6.4%
- Profit ÷ revenue.
- Gross margin
- 50%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £84.8k
- Revenue ÷ average employees.
- Profit per employee
- £5.4k
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 1.1%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- 0.4%
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 5.2%
- 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 −£37.8k
- Cash at bank
- ▲485%
- Now £6.2k
- Headcount
- ▲17%
- Now 7
- Deferred income
- —
- Now £2.2k
- Fixed assets
- ▼13%
- Now £6.6k
Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.
Similar profitable businesses
- Prosig LimitedTorrington · Manufacture of electronic measuring, testing etc. equipment, not for industrial process control
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- £795k
- Profit
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- Staff
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- Pulsar Instruments PLCFiley · Manufacture of electronic measuring, testing etc. equipment, not for industrial process control
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- £907k
- Profit
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- Mahr U.K. LimitedMilton Keynes · Manufacture of electronic measuring, testing etc. equipment, not for industrial process control
- Revenue
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- Profit
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- Staff
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Sources
Latest figures from FullAccounts for the year to 31 Mar 2025 (profit £37.9k), from the Companies House accounts bulk data published Jan 2026. Spotted an error? Request a correction.
Updated from Companies House on 23 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.