Tech Track 100

The software developed by this London company drives internet traffic to the websites of Vodafone and Monarch Airlines. Its technology can also help websites appear high up in search-engine rankings, and measure the return from online advertising campaigns. The company recently undertook a campaign for the Radisson Edwardian hotel chain and claims that it increased occupancy rates and generated £44 for every £1 invested. Greenlight was founded in 2001 by chief executive Warren Cowan, and its sales have grown 101% a year from £1.4m in 2005 to £11.3m in 2008.

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Company details
ActivityDigital marketing agency
LocationCentral London
Average 3 year sales growth101.31%
Latest sales £000s11,345

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* supplied by company † annualised figure