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The Government has slapped targets on the two major supermarket chains' backs.
Urgent legislation was passed last night to stop them blocking competitors from accessing land.
Commerce and Consumer Affairs Minister David Clark says this is just the first step to improve competition in the sector.
Finance Minister Grant Robertson said something very similar on yesterday's show.
Retail consultant Nick Hogendijk has been closely following the commerce commission report on supermarkets.
Nick joined Heather du Plessis-Allan.