Sorrell’s departure marks end of an era

The exit of Martin Sorrell from advertising, and specifically from the WPP marketing giant he built and reigned over, marks a significant turning point in world business, writes Kyran Fitzgerald.

Martin Sorrell has long been the ‘King Kong’ of the international ad world, a 73-year-old with chutzpah by the bucket load, the money man who took a chaotic advertising industry by storm.