Sugababes 'Push the Button' on London lights

The Sugababes joined 'X Factor' finalists in switching on the Christmas lights on London's Oxford Streets tonight before 50,000 screaming fans.

The Sugababes joined 'X Factor' finalists in switching on the Christmas lights on London's Oxford Street tonight before 50,000 screaming fans.

The Sugababes were invited to “push the button” while 'X Factor' contestants Daniel, Rachel, Ruth and Alexandra performed their smash hit charity single 'Hero'.