Silixa’s technology analyses the scattering of light in fibre-optic cables to give information on temperature, sound, flow composition and seismic disturbance along its length — a technology that has uses in the energy, security and industrial sectors. Its main application is in the oil and gas industry, where a cable put down a well can send back data from each metre of its length — which can be over 50km — for the life of the well. Co-founded in 2007 by Mahmoud Farhadiroushan, 51, the Hertfordshire firm counts all the oil giants as clients. Backed by Lime Rock, Chevron Technology and Statoil Technology, Silixa had sales of £5.1m in 2013.

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Company details
Year2014
Rank40
CompanySilixa
ActivitySensor technology developer
LocationHertfordshire
Average 3 year sales growth73.65%
Latest sales £000s5,119
Staff60
Founded2007
Websitewww.silixa.com

If applicable:

* supplied by company † annualised figure