Three years ago, there was a notorious incident at Sir Martin Sorrell’s last annual WPP strategy meeting as chief executive when he clashed with a guest speaker, Andy Main, then global head of Deloitte Digital. Sorrell played down the idea that Accenture, the most acquisitive of the management consulting firms, and Deloitte could move into the creative industries and he challenged Main onstage.
Jump forward to 2020 and things are different: WPP has hired Main to bring a more consultative approach to Ogilvy, where he is global chief executive, and Sorrell is two years into his reinvention as executive chairman of S4 Capital, which he has built into a £2bn business.
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