Martin Sorrell calls WPP ‘catatonic’ as Goldman slaps sell rating on its own client Media Sir Martin Sorrell spent 33 years turning WPP from a small Kent-based wire and plastics manufacturer into the world’s largest ad company. He left in 2018 following a dispute over personal conduct that he has consistently denied, and has been a vocal critic of his successors ever since. “I think they are further gone than [...]