Tesco aiming for bumper 2026 after best Christmas market share in decade

Chain reports strong sales but shares drop 5% after analysts say third quarter performance was behind expectations Business live – latest updates Tesco is aiming to grab an even bigger slice of the grocery market this year after winning its best share in more than a decade over Christmas with strong sales of fresh food and its Finest own-label range. The supermarket, which has an almost 29% market share, according to Worldpanel by Numerator, said it had taken the most trade from Asda, the UK’s third-largest supermarket chain that has been struggling to turn around falling sales.