Sir Martin Sorrell hailed "brilliant work for clients" as accolades for 47 agencies, including network of the year for Ogilvy & Mather, helped win holding company of the year for WPP at the Cannes Lions International Festival of Creativity 2014.
Sir Martin Sorrell hailed "brilliant work for clients" as accolades for 47 agencies, including network of the year for Ogilvy & Mather, helped win holding company of the year for WPP at the Cannes Lions International Festival of Creativity 2014.