By Sara Sjolin, MarketWatch Stagecoach rallies after winning East Coast rail contract
LONDON (MarketWatch) -- The U.K.'s FTSE 100 index edged higher Thursday, led by gains for banking firm Barclays PLC after a ratings upgrade.
The London benchmark rose 0.1% to 6,737.34. The index on Wednesday slipped 2 points.
Barclays (BCS) was the top advancer, rising 1.8% after Goldman Sachs lifted the bank to buy from neutral.
But energy companies...