The 43 unprofitable Tesco stores facing closure are "mostly" Express outlets, the retailer told ITV News.
The supermarket said it would be consulting with store employees affected by the closures "over the coming weeks".
Our performance as a business has fallen significantly short of where we would want it to be and we have had to face up to some very tough decisions, including the closure of 43 unprofitable stores.
Our first priority is to consult colleagues who are impacted by these changes and we will be speaking to them over the coming weeks.
Here is a look at retail giant Tesco's most significant setbacks over the past four years.
Tesco's CEO is promising shoppers bigger discounts and better service but there isn't much room to make aggressive cuts without self-harm.
The under-pressure supermarket is trying to regain market share by cutting prices on big brands such as Coca-Cola, Hovis and Marmite.