From mobile cardiac monitoring equipment to vehicle-recovery tracking devices, this Cambridge company designs custom-made electronic products and provides consulting services for clients such as Sony, Rolls-Royce and Ofcom. Having won the first Ministry of Defence “competition of ideas” project in 2007, the company is undertaking a £400,000 contract to improve military-convoy communications. Plextek was founded by managing director Colin Smithers, technical director Ian Murphy and non-executive director Tim Jackson, and its sales have grown 56% a year from £7.4m in 2005 to £28.2m in 2008.

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Company details
Year2008
Rank56
CompanyPlextek
ActivityElectronics design consultancy
LocationCambridge
Average 3 year sales growth55.99%
Latest sales £000s*28,196
Staff102
Founded1989
Websitewww.plextek.com

If applicable:

* supplied by company † annualised figure