Tesco chief Dave Lewis announces surprise departure

Ken Murphy from Walgreens Boots Alliance will take over as retailer’s boss next summerThe Tesco chief executive, Dave Lewis, has announced his surprise departure after five years at the helm of the UK’s biggest retailer.The former Unilever executive said he had completed the turnaround plan he set in train following the company’s 2014 accounting scandal and would leave the company in a “position of strength”. He will be succeeded next summer by Ken Murphy, a Boots l