Tesco outgrew its big four rivals again in September as convenience specialist the Co-op emerged as the only major grocer to lose sales.
Britain’s biggest retailer recorded a 2.8% uplift in sales during the 12 weeks to September 9 compared to the same quarter last year, according to data from Nielsen.
Nine of the 10 grocers in the survey posted sales gains during the period, but the Co-op’s revenues inched down 0.1%.
However, September’s figures were the first to take into account the impact of the 298 stores the Co-op sold to the McColl’s.
Rival data from Kantar Worldpanel also named Tesco as the fastest growing member of the big four, with a 2.7% sales rise in the 12 weeks to September 10.
Lidl and Aldi enjoyed growth of 19.2% and 15.6% respectively as the discount duo continued to outgrow the market at a pace.
But Kantar’s figures suggested Ocado was the quickest growing grocer aside from the discounters, as sales jumped 10.1% during the period.
Iceland’s sales increased for an 18th consecutive period, Kantar said, as its sales advanced 4%.
Kantar said overall supermarket sales climbed 3.6%, marking the sixth consecutive month in which revenues have risen more than 3%.
Kantar’s head of retail and consumer insight Fraser McKevitt said it was the longest sustained run of growth in the market since May 2013.
Nielsen said shoppers turned increasingly to own-label products during the quarter in a bid to combat the effects of food price inflation.
According to Nielsen’s figures, consumer spend on own-branded goods increased 5.5% year-on-year during the three-month period.
In contrast, spend on proprietary brands grew just 1.2%.
Nielsen’s UK head of retailer and business insight Mike Watkins said: “The return of inflation means shoppers are increasingly turning to supermarkets’ own-label products to help manage their weekly grocery spend.
“Own-brand sales are growing across all major food retailers but fastest at the discounters – Aldi and Lidl – and at the Co-operative, Iceland, M&S and Tesco.”