Tech Track 100

Affectv was founded in 2011 by chief executive Glen Calvert, 32, and specialises in targeted online advertising. The London firm’s Persona technology monitors online activity to decide which ads are relevant for which users. The company says its platform tracks up to 85% of the UK’s online traffic, monitoring more than 7bn online interactions a month. Octopus Ventures invested £2m in the company in 2013, and sales reached £5.1m last year.

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Company details
ActivityAdvertising technology developer
LocationCentral London
Average 3 year sales growth168.09%
Latest sales £000s5,146

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* supplied by company † annualised figure