He's a titan of business, having founded the world's largest advertising and PR group WPP, but now Sir Martin Sorrell has started another, S4 Capital. In this programme he discusses why he left WPP, his hopes for S4 Capital and where he ...See moreHe's a titan of business, having founded the world's largest advertising and PR group WPP, but now Sir Martin Sorrell has started another, S4 Capital. In this programme he discusses why he left WPP, his hopes for S4 Capital and where he thinks the marketing industry is headed.
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