The impact-absorbing products developed by this polymer engineer can help prevent shattered screens — a familiar annoyance for owners of smartphones. Set up in 2005 by Jason Roberts, 49, its cases and screen protectors for phones, tablets and Macbooks are designed and made in-house, and it has engineering and R&D teams developing materials such as its trademarked FlexShock. Strong growth in both existing and emerging markets helped sales at the Twickenham firm climb to £121.6m last year — more than 90% of the total generated overseas thanks to stockists in six continents, including Apple. Last October it became one of Google’s certified accessories partners under the Made for Google programme.

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Company details
Year2018
Rank58
CompanyTech21
ActivityDevice impact protection maker
LocationSouthwest London
Average 3 year sales growth75.34%
Latest sales £000s121,576
Staff81
Founded2005
Websitewww.tech21.com

If applicable:

* supplied by company † annualised figure