Esotec Ltd.
Registered name: ESOTEC LTD.
Part of Johnson Controls International Plc groupEsotec Ltd. made £42.6m revenue and £3m profit in the year to 30 Sep 2025.
Esotec Ltd.’s revenue grew 46% to £42.6m in the year to 30 Sep 2025, with £3m profit and 67 employees. The company is classified under “security systems service activities” and is based in Sunbury-on-Thames; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Sunbury-on-Thames, London
- Age
- 10 yrs · since 2016
- 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. From the filing: “ADT Fire and Security Plc”
Key figures
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 | 30 Sep 2024 | 30 Sep 2025 |
|---|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Full P&L | Full P&L |
| Profit & loss | ||||
| Revenue (turnover) | £20m | £30.9m | £29.2m | £42.6m |
| Cost of sales | £13m | £21.8m | −£20.5m | −£31.1m |
| Gross profit | £7m | £9.1m | £8.7m | £11.5m |
| Operating profit | £3.3m | £3.9m | £3.7m | £2m |
| Profit before tax | £3.4m | £4.5m | £5m | £3.1m |
| Profit after tax | £3.4m | £4.7m | £5m | £3m |
| Profit (best available) | £3.4m | £4.7m | £5m | £3m |
| Staff costs | £3m | £3.7m | — | — |
| Employees (average) | 44 | 53 | 54 | 67 |
| Ratios | ||||
| Profit margin | 16.8% | 15.1% | 17% | 7% |
| Gross margin | 34.9% | 29.3% | 29.9% | 27% |
| Revenue per employee | £456k | £583k | £541k | £635k |
| Profit per employee | £76.4k | £88k | £92.2k | £44.5k |
| Cash conversion | −5.9% | −16.3% | — | — |
| Growth (year on year) | ||||
| Revenue growth | — | ▲54.1% | ▼5.5% | ▲45.7% |
| Profit growth | — | ▲38.7% | ▲6.7% | ▼40% |
| Headcount growth | — | ▲20.4% | ▲1.9% | ▲24.1% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £16k | £30 | — | — |
| Net assets | £7.4m | £12.1m | — | — |
| Fixed assets | £255k | £178k | — | — |
| Current assets | £16.4m | £25.3m | — | — |
| Debtors | £2.8m | £4.3m | — | — |
| Cash from operations | −£197k | −£636k | — | — |
| Source | FullAccounts · bulk data Jun 2024 | FullAccounts · bulk data Jun 2024 | Accounts · bulk data May 2025 | Accounts · bulk data Sep 2026 |
How the business works
- Profit margin
- 7%
- Profit ÷ revenue.
- Gross margin
- 27%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £635k
- Revenue ÷ average employees.
- Profit per employee
- £44.5k
- 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
- ▲24%
- Now 67
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Group structure
Ownership chain
- Johnson Controls International Plc (registered outside the UK register)ultimate parent75–100%
- Tyco Holdings (U.K.) Limited75–100%
- Adt Fire and Security PLC75–100%
- Esotec Ltd.this company
Bands show the share of ownership each company holds in the one below it.
Sister companies (5)
- Computerised and Digital Security Systems LimitedActive - Proposal to Strike offRev. £4.6m · Profit £401k
- Aspro Crest LimitedActive - Proposal to Strike offFigures not disclosed
- Envision Intelligent Solutions LimitedRev. — · Profit £590k
- NX Fire Systems LimitedFigures not disclosed
- Vindex Systems LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Similar profitable businesses
- Triton Security & Facilities Management LimitedWetherby · Security systems service activities
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- Profit
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- Total Security Protection LimitedWatford · Security systems service activities
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- Evolution (Electronic Security Systems) Ltd.Marlow · Security systems service activities
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- Global Fire Systems LimitedQueens Drive · Security systems service activities
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- Asel Temporary Security Solutions LtdRochdale · Security systems service activities
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Sources
Latest figures from accounts for the year to 30 Sep 2025 (profit £3m), from the Companies House accounts bulk data published Sep 2026. Spotted an error? Request a correction.
Updated from Companies House on 14 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.