Tech Track 100

This company uses artificial intelligence to find out what ads mobile users should see on websites and apps. It claims to operate the largest mobile video platform in the world, which reaches 2bn devices and is used by the likes of Microsoft, Heineken and O2. Founded in 2010 by Stephen Upstone, 46, and Marco van de Bergh, 42, the company has since opened offices on the Continent and in America, China, India, Singapore and Ukraine, helping sales hit £12.8m in 2016. In March, it announced a $10m (£7.7m) fundraising from investors including Impulse VC and Harbert European Growth Capital.

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Company details
ActivityAdvertising technology developer
LocationCentral London
Average 3 year sales growth143.74%
Latest sales £000s12,820

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* supplied by company † annualised figure