The Greatest Dancer goes live for the very first time this series, as the final 12 acts dance on stage for the viewers' votes.The Dance Captains begin the live shows with three acts each, as they hope to guide them all the way to the final, to become The Greatest Dancer, win £50,000 and perform on Strictly Come Dancing.For their routines each act is given a specific challenge that they must include in their performance. This week's theme is Best of British, so the acts tackle routines representing everything from afternoon tea to Peaky Blinders.Just as in the auditions, the live studio audience still vote if they like the performances or not, however it's all down to the viewers at home to decide who will dance again next week, as only their votes will determine which ten acts make it through, and which two acts are going straight home.All this, plus the incredible street dance crew Diversity, including host Jordan Banjo, will be performing a unique routine.