EV designs camera systems that can be used 10,000 metres underground in oil and gas exploration. Investment from venture capital firm Lime Rock Partners in 2010 allowed the Norwich company to open its first overseas office in Louisiana, followed by further expansion in Texas, Canada, Norway and southeast Asia. EV now services clients such as BP and Shell and invests more than £1.5m every year in new product development. Chief executive Francis Neill, 53, oversaw sales of £19.6m this year, with 80% generated overseas. In June, private equity house Dunedin bought the business from Lime Rock Partners in a deal that valued it at £69m.

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Company details
Year2014
Rank18
CompanyEV
ActivityWellbore diagnosis technology
LocationNorwich
Average 3 year sales growth109.00%
Latest sales £000s*19,570
Staff101
Founded2000
Websitewww.evcam.com

If applicable:

* supplied by company † annualised figure