Supermarkets boost FTSE

Shortly before 8.30am, London's blue-chip index was up 19.04 points (0.43%) at 4,462.66 with food retailers the main buoy on the index. Morrison Supermarkets is up 7.31% to 271.75p on its forecast full-year profits will exceed expectations following a rise in second-quarter sales. Rivals Sainsburys and Tesco have been driven higher, with the former up 2.21% to 323.25p and the latter rising 1.95% to 377.2p. Miners have also been powered forward by rising metal prices benefiting from the prospect of a global recovery. Xstrata is up 2.05% at 712p, Rio Tinto has climbed 1.66% to £22...