Tess Daly and Claudia Winkleman return to the ballroom for an all-star Christmas special.

Tess Daly and Claudia Winkleman introduce the climax of this year's series.

Two couples face a dance-off, trying to secure a place in next week's final.

The remaining couples compete in the semi-final, performing two routines each.

Two couples face a dance-off to secure a place in the semi-final.

The remaining couples perform routines inspired by the world of musical theatre.

Another dance-off, and special guests Tom Grennan and Joel Corry perform in the ballroom.

The couples try to secure their places in next week’s Musicals Special quarter-final.

Two more couples face a dance-off, and Sam Ryder performs in the ballroom.

The remaining couples take to the floor of the Blackpool Tower Ballroom.

Two more couples face a dance-off, and the guest music performance is by Sheku and Zak.

The couples fight to secure a place in next week’s Blackpool special.

Two more couples face a dance-off, and there is a music performance by Luke Evans.

The couples try to impress the judges and the viewers at home with new routines.

Another two couples face a dance-off, and there's a music performance by Rina Sawayama.

This year's Halloween special sees the couples perform fierce and fun routines.

Becky Hill performs in the ballroom.

To celebrates 100 years of the BBC, the couples dance to iconic BBC theme tunes.

Two couples face a dance-off, and George Ezra performs in the Strictly Ballroom.

The couples dance live for your votes at home, all under the watchful eye of the judges.

Two more couples face a dance-off. With a guest performance by Adam Lambert.

It’s time to roll out the red carpet as Strictly Come Dancing takes you to the movies.

Two couples face the first dance-off of the series. With a performance by Robbie Williams.

The couples perform live and face a public vote for the first time this series.

In the opening live show of the series, the 15 couples dance for the first time.