This Hertfordshire firm develops sensors that monitor the temperature of critical electrical systems to prevent overheating, the leading cause of power failure in electrical equipment. Used by datacentres as well as customers in the oil & gas, healthcare, marine and utilities industries, it has also developed fault detection hardware and software. Exports hit £5.1m in the year to March, under founder and chief executive Ross Kennedy, 69.

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Company details
Year2019
Rank59
CompanyQHi Group
ActivityMonitoring systems developer
LocationHertfordshire
2 yr av intl sales growth % pa56.71%
International sales £000s*5,072
Total sales £000s*5,102
Staff15
Founded1988
Websitewww.qhigroup.com

If applicable:

* Supplied by company † Annualised figure