Asda has emerged as the UK's cheapest supermarket for the ninth successive year.

The supermarket group has topped The Grocer 33 - an independent survey of grocery prices, customer service and availability, conducted by The Grocer.

The Grocer 33 tracks the cost of a basket of 33 commonly bought grocery items at the top six supermarkets, the contents of which are rotated every few weeks.

Asda claimed The Grocer 33's cheapest shopping basket for 30 of the last 50 shops conducted this year. Tesco had 14, Sainsbury had four, and Morrisons two.

However, Asda has met with some stiff competition from Tesco over the last 12 months, and its average basket price for the year is currently just 0.7% cheaper than Tesco's, according to The Grocer 100 basket survey, which tracks the price of a secret 100-item basket of goods at each of the six major multiples.

Meanwhile, Morrisons has claimed The Grocer 33 Award for customer service for the second year in a row.

Waitrose won the award for best availability, boasting an average availability score of 98.40% for the year.

For full details, see The Grocer tomorrow.

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