San Diagnostics Ltd.
Registered name: SAN DIAGNOSTICS LTD.
San Diagnostics Ltd. made £266k revenue and £247k profit in the year to 31 Mar 2025.
San Diagnostics Ltd.’s revenue fell 29% to £266k in the year to 31 Mar 2025, with £247k profit and 1 employee. The company is classified under “specialists medical practice activities” and is based in Birmingham; we hold 4 years of its filed accounts.
- Status
- Active
- Location
- Birmingham, West Midlands
- Age
- 15 yrs · since 2011
- 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) | — | — | £374k | £266k |
| Gross profit | — | — | £374k | £266k |
| Profit before tax | — | — | £353k | £247k |
| Profit (best available) | — | — | £353k | £247k |
| Employees (average) | 0 | 0 | 0 | 1 |
| Ratios | ||||
| Profit margin | — | — | 94.5% | 92.7% |
| Gross margin | — | — | 100% | 100% |
| Revenue per employee | — | — | — | £266k |
| Profit per employee | — | — | — | £247k |
| Growth (year on year) | ||||
| Revenue growth | — | — | — | ▼28.8% |
| Profit growth | — | — | — | ▼30.1% |
| Balance sheet — indirect signals, not revenue | ||||
| Net assets | £958k | £1.2m | £1.3m | £1.4m |
| Current assets | £1m | £1.3m | £1.4m | £1.4m |
| Debtors | — | — | — | £17.8k |
| Source | Accounts · bulk data Dec 2023 | Accounts · bulk data Dec 2023 | FullAccounts · bulk data Dec 2024 | Directors' Report and Unaudited Financial Statements · bulk data Dec 2025 |
How the business works
- Profit margin
- 92.7%
- Profit ÷ revenue.
- Gross margin
- 100%
- Gross profit ÷ revenue. High for software and services.
- Revenue per employee
- £266k
- Revenue ÷ average employees.
- Profit per employee
- £247k
- 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
- 6.7%
- 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
- ▲6%
- Now £1.4m
- Cash at bank
- —
- Now —
- Headcount
- —
- Now 1
- Deferred income
- —
- Now —
- Fixed assets
- —
- Now —
Similar profitable businesses
- West Midlands Anaesthesia Ltd.Birmingham · Specialists medical practice activities
- Revenue
- £268k
- Profit
- £205k
- Staff
- 1
- JSC Organisation LtdLondon · Specialists medical practice activities
- Revenue
- £269k
- Profit
- £23k
- Staff
- 1
- DR Yeoh Sports Medicine Services LimitedGreenford · Specialists medical practice activities
- Revenue
- £271k
- Profit
- £107k
- Staff
- 2
- Jonathan Eaton LimitedDroitwich · Specialists medical practice activities
- Revenue
- £279k
- Profit
- £93.3k
- Staff
- 3
- Cambridge Heart LimitedCambridge · Specialists medical practice activities
- Revenue
- £250k
- Profit
- £137k
- Staff
- 2
- Maughan Consulting LtdBirmingham · Specialists medical practice activities
- Revenue
- £288k
- Profit
- £201k
- Staff
- 1
Sources
Latest figures from Directors' Report and Unaudited Financial Statements for the year to 31 Mar 2025 (profit £247k), from the Companies House accounts bulk data published Dec 2025. 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.