Strictly Come Dancing (informally known as Strictly) is a British television dance contest in which celebrities partner with professional dancers to compete in mainly ballroom and Latin dance. Each couple is scored by a panel of judges. The format has been exported to over 40 other countries, licensed by BBC Worldwide, and led to a modern dance-themed spin-off Strictly Dance Fever. The Guinness World Records has named Strictly to be the world's most successful reality television format. The series is currently presented by Tess Daly and Claudia Winkleman.