Seal Analytical Limited
Registered name: SEAL ANALYTICAL LIMITED
Part of Porvair PLC groupSeal Analytical Limited made £1.5m revenue and £273k profit in the year to 30 Nov 2025.
Seal Analytical Limited’s revenue grew 136% to £1.5m in the year to 30 Nov 2025, with £273k profit and 7 employees. The company is classified under “other manufacturing” and is based in King's Lynn; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- King's Lynn, East of England
- Age
- 26 yrs · since 2000
- 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 | 30 Nov 2022 | 30 Nov 2023 | 30 Nov 2024 | 30 Nov 2025 |
|---|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Full P&L | Full P&L |
| Profit & loss | ||||
| Revenue (turnover) | £992k | £660k | £618k | £1.5m |
| Cost of sales | £791k | £539k | £531k | £969k |
| Gross profit | £201k | £121k | £87k | £487k |
| Operating profit | −£31k | −£47k | £16k | £316k |
| Profit before tax | −£31k | −£47k | £16k | £316k |
| Profit after tax | −£35k | −£35k | £16k | £273k |
| Profit (best available) | −£35k | −£35k | £16k | £273k |
| Employees (average) | 5 | 5 | 6 | 7 |
| Ratios | ||||
| Profit margin | −3.5% | −5.3% | 2.6% | 18.8% |
| Gross margin | 20.3% | 18.3% | 14.1% | 33.5% |
| Revenue per employee | £198k | £132k | £103k | £208k |
| Profit per employee | −£7k | −£7k | £2.7k | £39k |
| Growth (year on year) | ||||
| Revenue growth | — | ▼33.5% | ▼6.4% | ▲135.6% |
| Profit growth | — | — | — | ▲1606% |
| Headcount growth | — | 0% | ▲20% | ▲16.7% |
| Balance sheet — indirect signals, not revenue | ||||
| Cash at bank | £437k | £422k | £428k | £131k |
| Net assets | £2.9m | £2.9m | £2.9m | £2.8m |
| Fixed assets | £2.5m | £2.5m | £2.5m | £2.5m |
| Current assets | £583k | £574k | £613k | £575k |
| Debtors | £75k | £63k | £124k | £312k |
| Deferred income | £172k | £188k | £206k | £233k |
| Source | FullAccounts · bulk data Aug 2024 | FullAccounts · bulk data Aug 2024 | AbridgedAccounts · bulk data Aug 2025 | FullAccounts · bulk data Aug 2026 |
How the business works
- Profit margin
- 18.8%
- Profit ÷ revenue.
- Gross margin
- 33.5%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £208k
- Revenue ÷ average employees.
- Profit per employee
- £39k
- Profit ÷ average employees.
- Cash conversion
- —
- Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
- Fixed assets ÷ revenue
- 171.2%
- Capital intensity. Low = capital-light, cheaper to start.
- Deferred income ÷ revenue
- 16%
- Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
- Debtors ÷ revenue
- 21.4%
- 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
- ▼3%
- Now £2.8m
- Cash at bank
- ▼69%
- Now £131k
- Headcount
- ▲17%
- Now 7
- Deferred income
- ▲13%
- Now £233k
- Fixed assets
- 0%
- Now £2.5m
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
- Porvair PLCultimate parent75–100%
- Seal Analytical Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Subsidiaries (1)
- Carekem LimitedFigures not disclosed
Sister companies (3)
- Kbiosystems LimitedRev. £4.1m · Profit £423k
- Kbioservices LimitedFigures not disclosed
- Porvair Filtration LimitedRev. — · Profit £6m
From the Persons with Significant Control register (corporate controllers only).
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Sources
Latest figures from FullAccounts for the year to 30 Nov 2025 (profit £273k), from the Companies House accounts bulk data published Aug 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.