Sainsbury's underperforms rivals again in latest data - Kantar

LONDON (Reuters) - British supermarket Sainsbury's underperformed its big four rivals again in a weak overall market during the 12 weeks to June 16, industry data showed on Tuesday.The group, which had its 7.3 billion pound takeover of rival Asda blocked by the UK competition regulator in April, saw its sales fall 0.6% in the period, market researcher Kantar said.In contrast sales at market leader Tesco, Asda and No. 4 Morrisons were flat, down 0.1% and down 0.5% respectively. Discounters Aldi..