WPP veteran Sheila Spence joins next week.
Martin Sorrell, WPP CEO, discusses the landscape for digital advertising as Amazon may be the next big threat to Google's dominance for ad revenue.
WPP CEO Martin Sorrell said despite some of the brand safety issues, advertising on digital is still growing strong.
WPP CEO Sir Martin Sorrell discusses the challenges of advertising via social media and technology giants such as Google and Facebook.
WPP CEO Sir Martin Sorrell discusses first-quarter earnings, saying that his business is doing "reasonably well" despite a "tough environment."
WPP CEO Sir Martin Sorrell explains how Bill O'Reilly's dismissal from Fox News shows that issues faced by traditional, linear media are not so far removed from the brand safety challenges faced by the likes of Google and Facebook.