Brands include Davidoff, JPS and Parker & Simpson.
Revenue and profit both fell in the second quarter of the year.
He will lead data science, analytics and technology specialists.
WPP has folded Possible into Wunderman as it aims to "better meet the demands of global marketers today and in the future".
P&G chief brand officer wants industry to have 'quality, civility, transparency, privacy and control'.
Sir Martin Sorrell regrets not simplifying WPP faster in terms of client-focused work, more country management and making sure this is underpinned by digital.
Twitter is seeing less demand from advertisers as it posted an 18% increase in ad revenue for the second quarter of the year.
Sue McCusker, the chief executive of Publicis Hong Kong, has joined the Dentsu Aegis Network digital shop Isobar as its client director for EMEA.
The global JV will take the business from Young & Rubicam.