Grab your glitterballs and join Tess Daly and Claudia Winkleman for a sparkling spectacular as all 15 couples hit the dance floor. Every step counts as the judges' scores from last week are combined with those from tonight's show. The celebrities are now dancing for survival, as the two lowest-scoring couples will have to face the dreaded dance-off in Sunday's results show. The pressure is on, as no-one wants to be the first to leave the competition.