Sainsbury’s won shoppers from rivals at Christmas but Argos sales dive

Supermarket reports 8.6% rise in grocery sales, although consumers rein in spending on electrical goods

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Sainsbury's won shoppers from all its major grocery rivals this Christmas but sales at its Argos chain dived, in a worrying sign for high street rivals.

The UK's second-biggest supermarket reported an 8.6% rise in grocery sales in the six weeks to 6 January but Argos sales fell 4.2% in the same period as shoppers reined in spending on electrical goods and furniture.