Market researcher Kantar Worldpanel said prices are rising fastest in markets such as butter, fish and cola and are falling in only a few markets, including crisps and fresh poultry.
Fraser McKevitt, head of retail and consumer insight at Kantar Worldpanel, said: "Volume sales have increased by less than 1%, meaning it's price rises keeping supermarket performance buoyant".
German retailers Aldi and Lidl continue to take market share from the top four United Kingdom grocery chains, Tesco, Sainsbury's, Asda and Morrisons, a survey from Kantar Worldpanel showed Tuesday.
Sales across the market over the 12 weeks to November 5 were up 3.2% on previous year, but this was nearly all down to the rising rate of inflation, according to Kantar's analysis.
Sainsbury's share price has been steady in today's session, having added 0.18 percent to 227.70p as of 13:38 GMT, in line with the broader United Kingdom market, with the benchmark FTSE 100 index now standing 0.16 percent higher at 7,427.20 points. A raft of new store openings has aided Lidl in growing its market share 0.5 per cent, while Aldi's jumped to rise 0.6 per cent to 6.7 per cent.
Lidl is the country's fastest growing supermarket for the fifth consecutive period with sales up 15% year on year. Drinks sales have risen by 5.3% year-on-year, according to McKevitt, with British consumers spending an extra £142 million on alcohol in the last financial quiarter.
Nielsen found United Kingdom grocery sales increased 3.1% across the whole market for the four weeks ending November 4.
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Kantar data said 76% of British households made a visit to Tesco during the past 12 weeks, whilst Asda had its eighth consecutive period of growth.
Both Morrisons and Iceland also saw growth of 2.1 per cent and 1.1 per cent respectively, but both also saw a 0.1 per cent drop in market share.
On currency markets, the pound was flat against the dollar at $1.3115, but fell against the euro, however, down 0.33% at €1.1205. Morrison's share fell by one percentage point to 10.4%.
Asda saw its eighth period of growth, its longest run of sales since March 2014. Both cheaper and more premium own label lines delivered an impressive performance to help increase overall sales by 1.5% year on year.
Tesco PLC (TSCO.LN) maintained its position as the leading grocer in the United Kingdom, according to Kantar, despite a decline to 28% of the market versus 28.2% a year earlier.
"Asda's budget Farm Stores range grew by 88%, while sales of its Extra Special line were up 22%".
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