Gina Cass-Gottlieb says tougher regulations may be needed to deal with complaints raised by shoppers and suppliers

The head of the competition and consumer regulator still has “high concerns” about the pricing practices of Australia’s dominant supermarkets even after they were subjected to litigation and intense public scrutiny.

Gina Cass-Gottlieb, the Australian Competition and Consumer Commission chair, also said regulations may need to be bolstered to combat complaints raised by shoppers and suppliers exposed to a highly concentrated sector led by Coles and Woolworths.

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