While the data showed Tesco leading the pack going into the key Christmas period, a cloud on the horizon is potential strike action that could hit product availability in stores
LONDON: Shares in Tesco rose on Tuesday after industry data showed Britain's biggest retailer had gained its highest market share since February 2019, though the threat of pre-Christmas strikes has escalated.
The stock closed up 1.3%, extending 2021 gains to 23%, after market researcher Kantar showed Tesco significantly outperformed its main rivals - Sainsbury's, Asda and Morrisons - in the 12 weeks to Nov. 28, winning 0.7 percentage points of market share in the period, its biggest jump since 2007.
