This London firm’s “eggPlant” tool tests mobile and desktop software, including Bloomberg terminals, to help ensure they are robust. Exports hit £5.8m in 2014 and last October it opened an office in Philadelphia. In January founder and chief executive George Mackintosh, 58, sold a majority stake to US investor The Carlyle Group.

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Company details
Year2016
Rank59
CompanyTestPlant
ActivitySoftware testing tools developer
LocationCentral London
2 yr av intl sales growth % pa56.76
International sales £000s5,848
Total sales £000s7,403
Staff55
Founded2008
Websitewww.testplant.com

If applicable:

* Supplied by company † Annualised figure