Tech21 has helped to ensure that fewer screens are shattered on smartphones, tablets and ereaders by using impact-absorbing materials to develop protective sleeves for the devices. Its smartphone cases and screen films are sold in Apple stores around the world. Jason Roberts, 46, started the firm in 2005, and since then sales at the Twickenham business have grown to £67.1m, with America being its biggest market.

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Company details
Year2015
Rank26
CompanyTech21
ActivityDevice impact protection maker
LocationSouthwest London
Average 3 year sales growth97.45%
Latest sales £000s*67,100
Staff70
Founded2005
Websitewww.tech21.uk.com

If applicable:

* supplied by company † annualised figure