UK supermarket chain Asda, a subsidiary of US retail titan Wal-Mart, is to beef up its online shopping service.

The company says around 30% of British homes accessed its online service at some point in 2004. It aims to double that number by the end of this year

In recent months Asda - Britain's number two supermarket after Tesco - has 'recently' invested more than £7m ($12.7m; €10.1m) in its internet shopping service. It claims its online range has doubled in size and offers 20,000 lines across food and non-food.

Says director of Asda ecommerce, David Rutley: "In the past twelve months we've focused heavily on improving the usability of the service. As a result, customer satisfaction scores have taken a big leap and customer retention rates have also made big steps forward."

Data sourced from BBC Online; additional content by WARC staff