Asda's sales slump 5.1 pct in a tough market for big four-Kantar Worldpanel
May 04, 2016 at 03:22 AM EDT
LONDON, May 4 (Reuters) - Sales at Wal-Mart's British supermarket chain Asda fell by 5.1 percent in 12 weeks to April 24, the worse performer in a period when all four of the biggest chains declined, Kantar Worldpanel said on Wednesday.