The John Lewis department store chain saw its sales decline by 4.4% year-on-year last week after trading was impacted by the wintry weather.
John Lewis & Partners' operations director Dino Rocos will be retiring at the end of May after 43 years with the business.
Debenhams saw its group like-for-like sales drop by 3.4% in the six weeks to 5 January as the department store chain battled against volatile trading conditions in the UK.
Sales at the John Lewis department store chain rose by 11.2% year-on-year last week.
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