Sainsbury's has reported a fall in annual profits as the supermarket price war continued to hurt the retailer.

Underlying profits, which strip out one-off charges, fell to £587m for the year to 12 March. That was down from £681m in the previous year.

Pre-tax profits for the year were £548m, reversing last year's £72m loss. That result was hit by charges related to the falling value of its properties.

In April, Sainsbury's agreed to buy Argos-owner Home Retail Group.

Chief executive Mike Coupe told the BBC's Today Programme that the deal would allow customers to choose from more than 50,000 products and collect them in 2,000 outlets within four hours, which he described a "pretty compelling".

'Fiercely competitive'

Sainsbury's has been suffering from the battle among supermarkets to cut prices and said that tough environment was unlikely to change anytime soon.

"Prices are actually 4% lower, would you believe, than two years ago and that's a reflection of the fact that the market is fiercely competitive - and it will remain so for the foreseeable future," Mr Coupe said.

Fraser McKevitt from consultants Kantar Worldpanel said: "Consumers are enjoying a golden period of cheaper groceries with like-for-like prices falling every month since September 2014."

Kantar said that the average household is now spending £78.10 a week in the supermarket.

Lidl storeImage copyrightReuters

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Discount retailers have been taking market share from bigger supermarkets

According Kantar, Sainsbury's maintained its market share of 16.5% during the 12 weeks to 24 April. Tesco, Asda and Morrisons saw their market shares fall.

Combined, the discount supermarkets Aldi and Lidl have a market share of 10.4% up from 9.2% last year.

In an attempt to break into discount retailing Sainsbury's has opened 15 Netto stores in partnership with Dansk Supermarked.

The company said that the performance of those stores would be reviewed, and that it would announce the outcome of that review in November.