No sign of truce as dispute enters third week.
Corporate brokerage is advisor to Sorrell's S4 Capital.
Former Maxus executive worked on merger wth Essence.
Company is investing in data and personalisation
David Jones thinks agencies will go the way of Kodak
Parent company of Campaign and What Car? is debt-free.
Agency group made its name helping Unilever on U-Studio.
OOH company debuts with valuation of about £320m.
The old world must forge new alliances
The duo will trade on their own leadership experience.
The importance of data is driving changes far beyond the narrow world of advertising.
William Eccleshare will head the global business.
Rise of in-housing and economic headwinds top the agenda.
Mother co-founder joined in January 2018.
Ezekiel becomes holding group's first chief marketing and growth officer.
Castree is tasked with boosting WPP's biggest market.
Campaign reports from WPP's investor day.
WPP chief executive outlines plan to be 'creative transformation company'.
Mark Read will focus on communications, experience, commerce and technology.
Marketers laid bare the highs and lows of taking work in-house at Campaign US' first Breakfast Briefing in Manhattan.