Tesco Ireland has increased its share of the Republic's grocery market from 25.7% to 26.8% , while shopper numbers heading North have also fallen.

Dunnes stayed at 23.7% and SuperValu at 20% [Kantar]. Lidl and Aldi pushed combined share to 8.8% from 7.9%. Asda and Sainsbury's have no stores in Ireland but had gained a 2.7% share from cross-border shoppers.

That fell to 1.7% as Irish price cuts and deflation, plus a rise in UK VAT, reduced numbers going north. Tesco said sales at its 11 Irish border stores were up 33%.

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