UK supermarket group Tesco is introducing influencer-led advertising across more than 3,800 in-store digital screens, its website and app. Tesco said 40% of shoppers under 45 follow influencers for product recommendations. It has also partnered with advertising technology company Kevel to launch Ad Manager, an AI-powered platform enabling brands to plan, book and optimise campaigns using Clubcard customer data. (Retail Gazette)