The big picture: Ken Murphy, CEO of Tesco, on the importance of doing the right thing

Our guests today are Ken Murphy, CEO of Tesco, the UK's biggest grocer and one of the world's biggest retailers, and Sumit Mitra, CEO of Tesco Business Services and Tesco Bengaluru. Murphy is visiting Tesco India for the first time since taking over as chief executive of the group about 18 months ago. In this conversation, he and Mitra talk about the role of the CEO in managing multiple stakeholders, the growing role of technology, and experiments at Tesco for reducing the retail giant's carbon footprint