The Top 5 discusses the biggest challenges and opportunities facing marketers around in digital media today. With guests Jim Brigden and James Briscoe, we discuss transparency, inhousing, voice search, regulation and measurement

Jim Brigden is currently Chairman at digital media auditor Percept, MD at Brainlabs and an investor and advisor at a swathe of digital companies, he previously held founding and senior roles at pivotal digital companies including TradeDoubler, I Spy Marketing and The Search Works.

James Briscoe is a leading figure in the digital marketing world. He has held senior roles at some of the biggest digital agencies in Europe, and now mentors and invests in madtech start-ups including Canton Marketing Solutions and Percept.