Isothermal Technology Limited

Active01530620ManufacturingIncorporated 27 Nov 1980 · Merseyside

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

Mar 2019
Not available
Mar 2020
£5.6m
Mar 2021
£5.4m▼ -3.7%
Mar 2022
£5.3m▼ -1.6%
Mar 2023
£5.6m▲ +5.4%
Mar 2024
£6.6m▲ +16.4%
Mar 2025
£7.3m▲ +11.6%
Period endRevenueGrowthProfit before taxEmployeesNet assets
31 Mar 2025£7.3m▲ +11.6%£1.5m57£9.1m
31 Mar 2024£6.6m▲ +16.4%£929k54£8.3m
31 Mar 2023£5.6m▲ +5.4%£469k54£7.9m
31 Mar 2022£5.3m▼ -1.6%£584k54£7.8m
31 Mar 2021£5.4m▼ -3.7%£1.3m55£7.3m
31 Mar 2020£5.6m—£1.2m54£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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