Cambridge Radio Frequency Services was co-founded in 2007 by chief executive Alistair Massarella, 47, to provide spectrum monitoring services such as tracking wi-fi usage in airports and public buildings. Its biggest client is the Brazilian government, which contracted the firm to develop systems for the World Cup and the 2016 Rio Olympics. The company has grown by investing in product development and international expansion. It is based in Cambridge but has two offices in America and 90% of its £5.6m sales are from exports.

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Company details
Year2014
Rank45
CompanyCRFS
ActivityNetwork monitoring tools developer
LocationCambridge
Average 3 year sales growth69.27%
Latest sales £000s*5,617
Staff30
Founded2007
Websitewww.crfs.com

If applicable:

* supplied by company † annualised figure