Shattered screens are a familiar hazard for smartphone, tablet and ereader owners. Developed in partnership with chemical companies, Tech21’s Impactology brand uses special materials – which include a polymer used in bulletproof glass – to make iPhone, Samsung and Kindle cases and screen protectors. The firm was founded by Jason Roberts, 44, and sales reached £16.9m last year.

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Company details
Year2013
Rank18
CompanyTech21
ActivityDevice impact protection maker
LocationSouthwest London
Average 3 year sales growth147.12%
Latest sales £000s*16,923
Staff35
Founded2005
Websitewww.tech21.uk.com

If applicable:

* supplied by company † annualised figure