London - Britain's top equity index lost ground on Friday as weaker mining stocks weighed on the market, although supermarket group Tesco rose after its sales fell less than forecast.
Tesco's shares advanced 3.6 percent after its first quarter performance suggested a tentative recovery in its key home market could be starting to move onto a stronger footing.
Tesco was the best-performing stock in percentage terms on the blue-chip FTSE 100 index, which was down 0.7 percent at 6,761.25 points, with global equity markets pegged back by persistent concerns over Greece's debt problems.
Without a deal at the weekend to unlock frozen aid, Greece, which has received two bailouts worth 240 billion euros ($268.85 billion) since 2010, is set to default on a repayment to the International Monetary Fund due on June 30.
“The market is coming under pressure, but there is still a chance they will reach a last minute agreement on Greece, as they have done in the past,” said Dafydd Davies, partner at Charles Hanover Investments.