• The Drum, Thursday, March 26, 2015 6:51 AM

WPP chief executive Sir Martin Sorrell has said the advertising industry doesn't report transparently and called out competitor Omnicom's "barter business" as a unit that runs without disclosure. Speaking at Advertising Week Europe, Sorrell was asked by Bloomberg anchor Francine Lacqua to comment on the next big thing to disrupt business. He shrugged off the question, saying he "didn't know," but suggested the revenue figures companies report "mirrors disruption" and the biggest issue is that the industry doesn't "report transparently."

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