Stagecoach drives FTSE upward

The firm, also one of the largest bus operators in the country, was approaching a 14% climb shortly before 3.30pm, helping London's blue-chip index scale 4,370 for the first time in a month. Software manufacturer Invensys climbed 13%, while marketing giant WPP advanced 10% despite a report from its buying operation Group M predicting a tough year for advertising sales. Health and personal care firm Reckitt Benckiser was nursing a 5% slump on Tuesday, while Petrofac also fell. British Airways' share price, down more than 4%, remained sluggish after its three-way merger with Qantas and ...