THE FOUNDERS OF Merkle | Periscopix, Marc Warren and Simon Norris, bonded over TVR sports cars not computers. But they saw early on the potential of the online advertising service Google AdWords, setting up this London-based digital marketing agency in 2004 to advise clients on pay-per-click, display and analytics. Acquired in 2015 by US firm Merkle, it employs 163 staff, who are happy with their work-life balance (81% positive) in jobs that are good for personal growth (89%). www.periscopix.co.uk
