Aeropak (Chemical Products) Limited
Registered name: AEROPAK (CHEMICAL PRODUCTS) LIMITED
Part of Diomed Group Holdings Limited groupAeropak (Chemical Products) Limited made £16.5m revenue and £518k profit in the year to 31 May 2025.
Aeropak (Chemical Products) Limited’s revenue grew 5% to £16.5m in the year to 31 May 2025, with £518k profit and 130 employees. The company is classified under “manufacture of other chemical products” and is based in Loughton; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Loughton, London
- Age
- 46 yrs · since 1980
- 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: “Diomed Group Holdings Limited”
Key figures
Badges are automated estimates derived from the filed figures — not statements of fact about the company.
Financial history
| Year to | 31 May 2022 | 31 May 2023 | 31 May 2024 | 31 May 2025 |
|---|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Full P&L | Full P&L |
| Profit & loss | ||||
| Revenue (turnover) | £12.1m | £15.5m | £15.8m | £16.5m |
| Cost of sales | £9.4m | £12.4m | £12.3m | £12.8m |
| Gross profit | £2.7m | £3.1m | £3.5m | £3.8m |
| Operating profit | £325k | £213k | £326k | £518k |
| Profit before tax | £325k | £213k | £326k | £518k |
| Profit after tax | £346k | £364k | £326k | £518k |
| Profit (best available) | £346k | £364k | £326k | £518k |
| Staff costs | £4.7m | £5.5m | £5.7m | £6.2m |
| Employees (average) | 123 | 132 | 129 | 130 |
| Ratios | ||||
| Profit margin | 2.9% | 2.4% | 2.1% | 3.1% |
| Gross margin | 22.2% | 19.9% | 22.1% | 22.7% |
| Revenue per employee | £98.4k | £117k | £122k | £127k |
| Profit per employee | £2.8k | £2.8k | £2.5k | £4k |
| Growth (year on year) | ||||
| Revenue growth | — | ▲28.1% | ▲1.8% | ▲4.6% |
| Profit growth | — | ▲5.2% | ▼10.3% | ▲58.9% |
| Headcount growth | — | ▲7.3% | ▼2.3% | ▲0.8% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £160k | £144k | £25.8k | £547k |
| Net assets | £9m | £9.4m | £9.7m | £10.2m |
| Fixed assets | £3.6m | £8m | £7.8m | £7.2m |
| Current assets | £7m | £2.2m | £2.5m | £3.6m |
| Debtors | £5.1k | £11 | £829 | £252 |
| Deferred income | £107k | £123k | £164k | £150k |
| Source | Accounts · bulk data Feb 2024 | Accounts · bulk data Feb 2024 | FullAccounts · bulk data Feb 2025 | FullAccounts · bulk data Feb 2026 |
How the business works
- Profit margin
- 3.1%
- Profit ÷ revenue.
- Gross margin
- 22.7%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £127k
- Revenue ÷ average employees.
- Profit per employee
- £4k
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 43.6%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- 0.9%
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 0%
- 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
- ▲5%
- Now £10.2m
- Cash at bank
- ▲2021%
- Now £547k
- Headcount
- ▲1%
- Now 130
- Deferred income
- ▼9%
- Now £150k
- Fixed assets
- ▼8%
- Now £7.2m
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
- Diomed Group Holdings Limitedultimate parent75–100%
- Diomed Developments Limited75–100%
- Aeropak (Chemical Products) Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (4)
- Dermal Laboratories LimitedRev. £45.7m · Profit £2.4m
- Brome and Schimmer LimitedRev. — · Profit −£3.8k
- Diomed Direct LimitedRev. — · Profit −£30
- Diomed Pharmaceuticals 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 May 2025 (profit £518k), from the Companies House accounts bulk data published Feb 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.