Sircal Instruments (U.K.) Limited
Registered name: SIRCAL INSTRUMENTS (U.K.) LIMITED
Part of Judges Scientific PLC groupSircal Instruments (U.K.) Limited made £1.8m revenue and £495k profit in the year to 31 Dec 2024.
Sircal Instruments (U.K.) Limited’s revenue fell 5% to £1.8m in the year to 31 Dec 2024, with £495k profit. The company is classified under “manufacture of other special-purpose machinery” and is based in London; we hold 3 years of its filed accounts.
- Status
- Active
- Location
- London
- Age
- 45 yrs · since 1981
- Type
- Private Limited Company
Key figures
Financial history
| Year to | 31 Dec 2022 | 31 Dec 2023 | 31 Dec 2024 |
|---|---|---|---|
| Disclosure | Full P&L | Full P&L | Full P&L |
| Profit & loss | |||
| Revenue (turnover) | £1.7m | £1.9m | £1.8m |
| Cost of sales | −£1.2m | −£1.2m | −£1.1m |
| Operating profit | £568k | £705k | £661k |
| Profit before tax | £568k | £705k | £661k |
| Profit after tax | £460k | £540k | £495k |
| Profit (best available) | £460k | £540k | £495k |
| Employees (average) | — | — | — |
| Ratios | |||
| Profit margin | 26.6% | 28.9% | 27.9% |
| Growth (year on year) | |||
| Revenue growth | — | ▲7.8% | ▼4.9% |
| Profit growth | — | ▲17.4% | ▼8.2% |
| Balance sheet — indirect signals, not revenue | |||
| Net assets | — | — | — |
| Source | Accounts · bulk data Sep 2024 | Accounts · bulk data Sep 2024 | Accounts · bulk data Sep 2025 |
How the business works
- Profit margin
- 27.9%
- Profit ÷ revenue.
- Gross margin
- —
- 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
- Judges Scientific PLCultimate parent75–100%
- Fire Testing Technology Limited75–100%
- Sircal Instruments (U.K.) Limitedthis company
Bands show the share of ownership each company holds in the one below it.
Sister companies (3)
- Aitchee Engineering LimitedFigures not disclosed
- FTT Scientific LimitedFigures not disclosed
- Stanton Redcroft LimitedFigures not disclosed
From the Persons with Significant Control register (corporate controllers only).
Sources
Latest figures from accounts for the year to 31 Dec 2024 (profit £495k), from the Companies House accounts bulk data published Sep 2025. Spotted an error? Request a correction.
Updated from Companies House on 18 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.