Behind the scenes at the National Dance Championships as it celebrates its 50th anniversary. Cameras follow three couples from practice to performance, and hopefully to the podium. Professionals Petar Daskalov and Zia James are chasing the Latin trophy for a second year running. Eleven-year-old partners Leo and Chloe, who have been dancing together for just a year, are hoping to shine in both Latin and Ballroom. And after six attempts at the Amateur Ballroom Championships, Andrei Toader and Mia Linnik-Holden are back on the dance floor, hoping it's seventh time lucky