Tess Daly and Claudia Winkleman present a night to remember on the Strictly Come Dancing ballroom floor. The competition is at melting point as the six surviving couples pivot, twist and turn to keep the glitter ball trophy in their sights. Voting lines open at the end of the show; once the judges' scores have been added to viewer votes, the two lowest-scoring couples will perform again in the dreaded dance-off during Sunday's results show.