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Annual grocery inflation was 3.8% over the past four weeks, up from 3.5% in December, Kantar found.

Sales of savoury snacks, fresh beef and crisps rose last month, while beer, bacon and vitamins fell

Dry January and Veganuary boosted sales of vegan and low alcohol products.

Fraser McKevitt, head of retail and consumer insight at Kantar, said: "Prices are rising on many fronts, and the weekly shop is no exception.

"Like-for-like grocery price inflation, which assumes that shoppers buy exactly the same products this year as they did last year, increased again this month.

"Taken over the course of a 12-month period, this 3.8% rise in prices could add an extra