Tesco, Sainsbury's Make Millions Off Loyalty Card Data: Times - Bloomberg

Tesco Plc and J Sainsbury’s Plc, two of the biggest UK supermarkets, make about £300 million ($376 million) a year from selling information about their customers’ shopping preferences, the Times reported.

The rise and fall of UK grocer Tesco that 'owned the world

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Tesco (TSCO), Sainsbury, M&S, Persimmon (PSN), Asos Report Results Next Week - Bloomberg

Supermarket reward schemes ranked ahead of Christmas as Tesco, Sainsbury's and Co-op vie for top spot - Scottish Daily Express

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Inflation Hits Loyalty Cards as Tesco, Sainsbury Ramp Up Promotions - Bloomberg

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Tesco Caps Tumultuous Year With Huge Loss - WSJ

Tesco hails turnaround as festive sales increase, Tesco

Are loyalty cards really worth it?, Supermarkets

Media Bites 30 Sep: Sainsbury's, Poundland/Pepco, Tesco, News