UK advertising agency Walker Media is subject to a £35 million bid for a 75% stake from French giant Publicis after the Parisian media group admitted it was "in discussions with M&C Saatchi in relation to Walker Media, which may involve the purchase of a significant part of that business."

Publicis' flagship media agency has published its latest global advertising expenditure forecast, suggesting that Europe is "acting as a brake on global ad growth" compared to the flourishing networks across the world.

Publicis Groupe, the third-largest advertising and PR company in the world, has announced the purchase of Chinese social media network Net@lk, continuing in its five-year strategy to spend $4bn on digital companies in emerging markets.

Publicis digital agency ZenithOptimedia has announced a world-first partnership with search giant Google to create a unique consultancy to revolutionise mobile strategy.

ZenithOptimedia have released their Top Thirty Global Media Owners report for 2013, which has ranks the world's largest media groups by their revenues.

E-commerce giant Amazon have appointed IPG's Initiative to handle their global media duties, supplanting WPP's Mindshare to the business.

Publicis digital agency ZenithOptimedia have predicted a 3.9% global rise in global advertising expenditure in their forecast for 2013.

Using data "supplied exclusively to Campaign" via Nielsen, Maisie McCabe's report revealed an overall decline in billings for the top 100 creative agencies and top 50 media agencies during 2012.