Buckinghamshire-based Masternaut returns to the Tech Track 100 after a four-year absence, having received investment from Summit Partners and FleetCor Technologies. The technology put in vehicles belonging to customers such as Balfour Beatty, G4S and Travis Perkins allows real-time monitoring of everything from driver hours to fuel consumption. It can also be used to allow drivers to switch easily between personal and business use of their company cars. Chief executive Martin Hiscox, 53, oversaw sales of £69.7m in 2013.
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