Vodafone is lifting the mobile telecommunications sector higher amid talk it is mulling a bid for T-Mobile UK, the British wireless unit of Deutsche Telekom, according to press reports.The Financial Times is quoting people familiar with the situation as saying that the company is considering making an offer for T-Mobile UK, which has an estimated enterprise value of €3bn-€4bn, or setting up a joint venture.Premier Foods is among the stocks dragging the food producer sector lower, even after the Hovis bread and Branston Pickle maker said trading has continued on track.With shares generally on the up, defensive stocks such as electricity firm Scottish and Southern Energy and gas supplier Centrica are in the red. Top performing sectors so far todayElectronic & Electrical Equipment 1,232.74 +1.71%Mobile Telecommunications 2,715.56 +1.38%Health Care Equipment & Services 2,507.40 +1.29%Beverages 6,276.91 +1.26%Life Insurance 2,880.17 +1.23%Bottom performing sectors so far todayAutomobiles & Parts 1,909.42 -3.39%Real Estate 1,558.35 -0.30%Food Producers & Processors 3,615.01 -0.27%Gas, Water & Multiutilities 3,534.64 -0.10%Electricity 6,184.59 -0.03%