Pharma giant GlaxoSmithKline has reportedly launched a review of its £1.3bn global media agency arrangements, putting MediaCom and PHD on alert.
The review, which is being handled by ID Comms, comes less than three years after GSK awarded its European business to MediaCom, while PHD was handed its US media account.
Both agencies had retained the accounts in 2015 following a global media review, after having been first appointed in 2013.
COMMENTS