Sainsbury's has forecast that shop profits will flatline or fall in the coming year as the supermarket sector prepares for a possible price war. The retailer said it expects income to dip to £1bn as it continues to invest in lowering grocery prices.

Sainsbury’s has indicated that profits will be flat over the next year as it faces competition on price and a surge in costs

Sainsbury's chief exec Simon Roberts (pictured) said it was 'committed above all else' to being the 'most competitive we've ever been'.