Celsis Limited
The principal activity of the Company is the IP owner of Celsis IP developed for rapid diagnostic and monitoring systems for use in the detection and measurement of low-level microbial contamination in a wide range of manufacturing processes and end products. The Company also provides local sales support on behalf of Charles River Microbial Solutions International Limited ('CRMSIL'), for the full Microbial Solutions portfolio. The principal activity of the Company is the IP owner of Celsis IP developed for rapid diagnostic and monitoring systems for us in the detection and measurement of low-level microbial contamination in a wide range of manufacturing processes and end products. The Company also provides local sales support on behalf of Charles River Microbial Solutions International Limited ('CRMSIL'), for the full Microbial Solutions portfolio.
Revenue
£7.8m
▲ +13.8% vs prior ~12m period
Profit after tax
£4.2m
Margin 70.5%
Employees
14
▲ +7.7% vs prior ~12m period
Net assets
£3.0m
Total assets £3.7m
Financial history
Revenue by accounting period
3 periods available · ▲ growth ▼ decline
| Period end | Revenue | Growth | Profit before tax | Employees | Net assets |
|---|---|---|---|---|---|
| 27 Dec 2025 | £7.8m | ▲ +13.8% | £5.6m | 14 | £3.0m |
| 28 Dec 2024 | £6.9m | ▲ +6.3% | £4.9m | 13 | £3.0m |
| 30 Dec 2023 | £6.5m | — | £4.8m | 12 | £2.2m |
Latest available figures
Period ending 27 Dec 2025. “Not available” means the figure is not in the accounts we hold. We do not estimate missing figures.
Profit & loss
- Revenue
- £7.8m
- Gross profit
- £7.4m
- Operating profit
- £5.5m
- Profit before tax
- £5.6m
- Profit after tax
- £4.2m
Balance sheet
- Total assets
- £3.7m
- Cash
- Not available
- Total liabilities
- £661k
- Net assets
- £3.0m
- Revenue per employee
- £560k
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