Pressure from supermarkets pushes Ftse 100 further into the red

The Ftse 100 index fell 73.6 points to 6,112.02, as the falling copper price and a slip in Brent crude took its toll on the mining sector.
Glencore was 4.8p lower at 145.1p, while Anglo American tumbled 22.5p to 643.2p, as the price of oil dropped 0.3% to $44.83 a barrel.