LONDON—
Martin Sorrell
built
PLC into the world’s largest advertising agency over three decades through a combination of impatience, drive and the occasional angry outburst.
Not a lot has changed.
Ever since his acrimonious departure as WPP’s chief executive, the 76 year old has been building a new business to rival his old shop. At
PLC, he has ditched the tailored suits in favor of jeans and a black T-shirt. “Disrupting the old” is part of his pitch in deals talks, especially when “the old” means WPP.
The “About Us” section of S4 press releases note WPP’s market capitalization has fallen since Mr. Sorrell left. He has traded insults with his former company, including one altercation with a WPP…
