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Published on Dec 6, 2012
It's a busy day on Downing Street. The Christmas tree arrives and is set up for the big event: the X Factor finalists switching on the lights.
Prime Minister David Cameron is joined by X Factor judge Nicole Scherzinger and finalists Jahmene Douglas, James Arthur and Christopher Maloney. The finalists entertain the crowd, including 200 school children, by singing Silent Night and We Wish You a Merry Christmas.