The big four supermarkets all performed strongly over the 12 weeks ending 5 August, with Asda growing at 6.2 per cent and Sainsbury’s at 4.6 per cent. And while Tesco continues to lose share, this is now at a slower rate than earlier this year.
Fraser McKevitt, retail analyst at Kantar Worldpanel which complied the figures, said that shoppers are benefiting from lower grocery price inflation - at 3.2 per cent, the lowest rate of increase for 18 months.
"Despite this, consumers are still seeking economy products and retailers are reflecting this demand in their store offerings," he said.
Economy own-label lines are growing at 13 per cent while premium own-label sales are falling by 4 per cent year-on-year, he added.
The figures also appear to show a continuing polarisation in the grocery market, with Aldi and Lidl at one end, and Waitose at the other, both growing faster than the sector as a whole.