Commodity stocks lead FTSE lower; Kingfisher rises

* FTSE 100 down 0.8 pct

* Lower metal and oil prices weigh on commodity shares

* Kingfisher rises on B&Q, margin cheer

By Dominic Lau

LONDON, July 24 (Reuters) - Britain's blue-chip index fell on Thursday as lower oil and metal prices weighed on heavyweight commodity shares, though a second-quarter trading update boosted retailer Kingfisher (KGF.L: Quote, Profile, Research, Stock Buzz).

By 0749 GMT, the commodity-heavy FTSE 100 .FTSE was down 45.9 points, or 0.8 percent, at 5,404.0, after rising 1.6 percent on Wednesday.

Miners fell in step with weaker metal prices, with BHP Billiton (BLT.L: Quote, Profile, Research, Stock Buzz), Rio Tinto (RIO.L: Quote, Profile, Research, Stock Buzz), Anglo American (AAL.L: Quote, Profile, Research, Stock Buzz), Xstrata (XTA.L: Quote, Profile, Research, Stock Buzz), Vedanta Resources (VED.L: Quote, Profile, Research, Stock Buzz), Ferrexpo (FXPO.L: Quote, Profile, Research, Stock Buzz), Antofagasta (ANTO.L: Quote, Profile, Research, Stock Buzz) and Lonmin (LMI.L: Quote, Profile, Research, Stock Buzz) all down between 0.8 and 2.5 percent.

Oil shares also fell as crude oil CLc1 traded below $125 a barrel, well off its peak of nearly $148 earlier this month.