Of the hundreds of celebrities who have competed on the BBC series “Strictly Come Dancing,” only 19 have danced all the way to the winner’s circle. From initial victor Natasha Kaplinksy to reigning champ Rose Ayling-Ellis, a wide range of entertainers aged 23 to 55 have demonstrated strong enough ballroom dancing skills to win the favor of home viewers and judges alike. In honor of the landmark 20th season, take a look at the “Strictly Come Dancing” winners ranked from worst to best in photos.

“Strictly Come Dancing” launched in May 2004 and became the touchstone in an international franchise of celebrity dance competition series (including the US’s “Dancing with the Stars”). The show is now a staple of British television, having aired a new season every fall for nearly two decades. It is currently hosted by Tess Daly and Claudia Winkleman and judged by Shirley Ballas, Anton du Beke, Craig Revel Horwood,...