X Factor finalists light No10 Christmas tree

Prime Minister David Cameron was joined by the three X Factor finalists and judge Nicole Scherzinger in Downing Street for the switching on of No 10’s Christmas tree lights. X Factor contestants Jahmene Douglas, James Arthur and Christopher Maloney, along with judge Nicole Scherzinger, helped David Cameron switch on Downing Street’s festive illuminations. The singers then performed Christmas carols on the steps of No 10 for dozens of cheering school-children. The winner of the ITV talen