German-owned Aldi has overtaken the Co-operative as Britain's fifth biggest supermarket, industry data shows.
Aldi's sales rose 12.4% year-on-year in the 12 weeks to 29 January, taking its market share to 6.2% and ahead of the Co-op's 6%, according to research firm Kantar Worldpanel.
It underlines the challenge the big retailers have faced from discounters such as Aldi and its German rival Lidl.
Sales at Lidl rose 9.4%, taking its market share to 4.5%.
"Underpinned by an extensive programme of store openings, the past quarter has seen Aldi attract 826,000 more shoppers than during the same period last year," said Fraser McKevitt, head of retail and consumer insight at Kantar Worldpanel.