St. John is a main board member of BBDO Worldwide and Omnicom Europe. He leads BBDO's European P&L operations across 46 offices and 27 countries and is responsible for the relationship of one of Omnicom's largest multi-national clients, Mars Inc., at a holding company level.
Over the past decade of St. John's stewardship of Mars at BBDO, their Mars business has grown over 350% to become their largest client. It's also their most creatively awarded, The agency has won over 469 awards from every major show including a D&AD Black Pencil, Cannes Lions Grand Prixs and IPA and Effie global effectiveness awards. Mars were Client of the Year at the Cannes Lions in 2012, The One Show in 2015, The FAB awards 2015 and 2016 and The Spikes in 2016.
In 2016 BBDO Europe enjoyed both revenue growth and EBITA margin improvement for the first time in several years. BBDO agencies in Europe, in markets as diverse as Belguim, Spain and Portugal, were all multiple Cannes Lions winners.