Read Kamal's blog in full
Tesco - the UK's biggest supermarket chain and the world's third largest retailer after Walmart and Carrefour - has faced challenges on several fronts in recent years.
Hard discounters such as Aldi and Lidl have been eroding the market share of the big four supermarket chains, while Tesco has struggled with excess floor space in out-of-town superstores.
Shoppers have moved away from doing one big weekly shop at such stores in favour of topping up more frequently from high street convenience stores.