Sir Martin Sorrell on brand purpose

Rupert Maconick sits down with advertising legend Sir Martin Sorrell to chat about brand purpose, Sorrell's new company S4 capital, and what today's disrupted media landscape means for large holding companies. Sir Martin Sorrell is a British businessman and the founder of WPP. Today, he is the Executive Chairman of S4 Capital, a purely digital advertising and marketing service for global brands. Rupert Maconick is the Founder and Executive Producer of Saville Productions. Saville Produc...