Xinhua: Police from the Scotland Yard confirmed on Sunday that a woman who threw a cup of green custard onto the face of British Business Secretary Peter Mandelson has been arrested. Environmental campaigner Leila Deen from Plane Stupid threw the custard at Mandelson on Friday when the secretary arrived for a low carbon summit in London, to show her anger at Mandelson’s involvement in the government’s decision to approve a third runwayat Heathrow Airport. Environmental activists fear that the …