Isothermal Technology Limited
Based in Southport, UK, Isotech is a world leader in the design, development, and manufacture of precision temperature metrology equipment. Our focus on quality, customer service, investment and innovation drive our comprehensive product range. With operations in over 125 countries through an extensive distributor network, we are committed to providing complete temperature metrology solutions to a diverse array of clients. With over 40 years of experience in the industry, we have built a trusted reputation for delivering high-quality products and services. Our commitment to excellence has made us a preferred partner for numerous National Metrology Institutes around the globe.
Revenue
£7.3m
▲ +11.6% vs prior ~12m period
Profit after tax
£1.1m
Margin 20.2%
Employees
57
▲ +5.6% vs prior ~12m period
Net assets
£9.1m
Total assets £10.3m
Financial history
Revenue by accounting period
7 periods available · ▲ growth ▼ decline
| Period end | Revenue | Growth | Profit before tax | Employees | Net assets |
|---|---|---|---|---|---|
| 31 Mar 2025 | £7.3m | ▲ +11.6% | £1.5m | 57 | £9.1m |
| 31 Mar 2024 | £6.6m | ▲ +16.4% | £929k | 54 | £8.3m |
| 31 Mar 2023 | £5.6m | ▲ +5.4% | £469k | 54 | £7.9m |
| 31 Mar 2022 | £5.3m | ▼ -1.6% | £584k | 54 | £7.8m |
| 31 Mar 2021 | £5.4m | ▼ -3.7% | £1.3m | 55 | £7.3m |
| 31 Mar 2020 | £5.6m | — | £1.2m | 54 | £6.6m |
| 31 Mar 2019 | — | — | — | — | £5.9m |
Latest available figures
Period ending 31 Mar 2025. “Not available” means the figure is not in the accounts we hold. We do not estimate missing figures.
Profit & loss
- Revenue
- £7.3m
- Gross profit
- £3.8m
- Operating profit
- £1.5m
- Profit before tax
- £1.5m
- Profit after tax
- £1.1m
Balance sheet
- Total assets
- £10.3m
- Cash
- £4.1m
- Total liabilities
- £1.1m
- Net assets
- £9.1m
- Revenue per employee
- £129k
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