National Grid is helping lift the gas, water and multi-utilities sector higher after the energy pipeline operator announced a new finance director.Andrew Bonfield, the former chief financial officer of sweetmaker Cadbury, is becoming the new finance boss. He replaces Steve Lucas, who retires from the board at the end of this year.Lower crude prices weigh on the oil sector. Big-hitters including Cairn Energy are among the heaviest fallers.Top performing sectors so far todayFixed Line Telecommunications 2,003.72 +1.37%Gas, Water & Multiutilities 4,399.49 +1.14%Alternative Energy 3,168.99 +0.89%Mobile Telecommunications 3,670.70 +0.61%Food & Drug Retailers 4,981.46 +0.52%Bottom performing sectors so far todayOil & Gas Producers 7,520.31 -1.25%Chemicals 6,127.45 -1.20%Real Estate Investment & Services 1,484.29 -1.16%Industrial Transportation 2,331.43 -1.13%Forestry & Paper 5,584.95 -1.05%