Tesco has moved its GBP90m media planning and buying account to MediaCom, ending its 20-year relationship with Initiative. The supermarket kicked off a review of its media account in March. MediaCom is understood to have beaten Initiative, M/SIX and the Publicis Groupe media agency ZenithOptimedia to the business. In January, Tesco moved its creative account into Bartle Bogle Hegarty without a pitch. The creative business was previously handled by Wieden+Kennedy.