Shattered screens are a familiar hazard for smartphone, tablet and ereader owners. Tech21’s Impactology brand uses special materials to make iPhone, Samsung and Kindle cases and screen protectors. The company was set up in 2005 by Jason Roberts, now 45. In 2009 he won backing from Peter Jones and Theo Paphitis after pitching his product on the BBC’s Dragons’ Den. However, the deal was shortlived and 18 months later the pair sold their stake. Sales at the south London firm reached £22.5m this year.

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Company details
Year2014
Rank5
CompanyTech21
ActivityDevice impact protection maker
LocationSouthwest London
Average 3 year sales growth171.73%
Latest sales £000s*22,500
Staff44
Founded2005
Websitewww.tech21.uk.com

If applicable:

* supplied by company † annualised figure