Mark Gilbert , Columnist

WPP’s Perfect Advertisement of How Not to Do It

Its investigation of Martin Sorrell has served absolutely noone.

Martin Sorrell at Davos, Switzerland.

Photographer: Jason Alden
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Months after WPP Plc started investigating allegations of personal misconduct by CEO Martin Sorrell, the advertising giant's silence on the outcome of that inquiry has been deafening.

At the weekend, the Wall Street Journal reported that the probe addressed whether he used company money to pay a sex worker. Sorrell has strongly denied the WSJ's report.