Like-for-like annual grocery-price inflation rose to 4.69% in the 12 weeks to 4 October, up from 4.28% previously.

That's according to the latest data from Worldpanel by Numerator.

This is the second reading in a row to show an acceleration in grocery prices following a period of slowing inflation, which saw price growth drop below 3.9% in August.

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Cautious

Eimear Faughnan, head of retail for Ireland at Worldpanel by Numerator, said: “The cost of living was front of mind for shoppers in Ireland in the run-up to the latest Budget ... The mood among shoppers is cautious, who are thinking carefully about what they put in their basket.

“Special offers remain a key tool for shoppers looking to keep their grocery bills in check and make pricier items and larger packs more affordable, and the increase in promotional spending is further evidence that the focus is on value for money for many.”

Overall spending on groceries in Ireland increased by 4.3% in the four weeks to 4 October, compared to the same period a year earlier.

Dunnes top, Lidl the big winners

The report from Worldpanel by Numerator also included an update on market share.

Dunnes retained the number one spot with 24.8%, with Tesco in a close second at 24% market share.

Lidl saw the biggest increase of the major supermarkets, however, with its share rising to 14.8%, well ahead of its discount-supermarket rival Aldi, which was at 10.8%.