Tess Daly and Claudia Winkleman present the results of last night's viewers' votes and judges scores. The two lowest scoring couples must then compete in a dance-off before Shirley Ballas, Dame Darcey Bussell, Bruno Tonioli and Craig Revel Horwood decide which of them will be leaving the contest. Plus, the Backstreet Boys perform a medley of their greatest hits.
