Strictly Come Dancing series 17

Strictly Come Dancing returned for its seventeenth series with a launch show on 7 September 2019 on BBC One, and the live shows beginning on 21 September. Tess Daly and Claudia Winkleman returned as hosts, while Zoe Ball returned to host Strictly Come Dancing: It Takes Two alongside new addition Rylan Clark-Neal.

Shirley Ballas, Craig Revel Horwood, and Bruno Tonioli returned to the judging panel. After seven years, Darcey Bussell did not return to the series. Motsi Mabuse, elder sister of professional dancer Oti Mabuse, was announced as Bussell's replacement on 22 July. On 19 October, actor Alfonso Ribeiro returned as a guest judge.

Emmerdale actor Kelvin Fletcher and Oti Mabuse were announced as the winners on 14 December, while EastEnders actress Emma Barton and Anton Du Beke, and CBBC presenter Karim Zeroual and Amy Dowden were the runners-up.

Format
The couples dance each week in a live show. The judges score each performance out of ten. The couples are then ranked according to the judges' scores and given points according to their rank, with the lowest scored couple receiving one point, and the highest scored couple receiving the most points (the maximum number of points available depends on the number of couples remaining in the competition). The public are also invited to vote for their favourite couples, and the couples are ranked again according to the number of votes they receive, again receiving points; the couple with the fewest votes receiving one point, and the couple with the most votes receiving the most points.

The points for judges' score and public vote are then added together, and the two couples with the fewest points are placed in the bottom two. If two couples have equal points, the points from the public vote are given precedence. As with the previous series, the bottom two couples have to perform a dance-off on the results show. Based on that performance alone, each judge then votes on which couple should stay and which couple should leave, with Shirley Ballas, as head judge, having the last and deciding vote.

Professional dancers
On 1 March 2019, it was announced that Pasha Kovalev would be leaving the show after eight years as a professional dancer. On 30 July 2019, Nancy Xu was revealed to have been added to the cast of professionals. On 21 August 2019, it was confirmed that both Gorka Márquez and Graziano Di Prima would not have celebrity partners, a change from the previous series; in their place, the three professionals who did not have celebrity partners in series 16 - Neil Jones, Johannes Radebe, and Luba Mushtuk - were all given one for the first time.

Couples
This series featured fifteen celebrity contestants. On 31 July 2019, the first three celebrities were announced: Emma Barton, David James, and Chris Ramsey. Celebrity reveals continued throughout the next week until the full line-up was revealed on 7 August 2019. Made in Chelsea star Jamie Laing was originally announced as a contestant, but on 5 September 2019, it was announced that he had withdrawn from the show due to a foot injury. He was replaced by former Emmerdale actor Kelvin Fletcher on 7 September 2019.

Due to a knee injury sustained when he landed after jumping from a raised platform during studio rehearsals, Will Bayley was unable to perform on 26 October in the live episode. The injury was such that, on 30 October, he withdrew from the competition.

Scoring chart
The highest score each week is indicated in with a dagger (†), while the lowest score each week is indicated in  with a double-dagger (‡).

Color key: • {{legend|gold|Winners}}

• {{legend|silver|Runners-up}}

• {{legend|lightblue|Bottom two}}

• {{legend|#fff383|Excused from competition for the week}}

• {{legend|lightgreen|Withdrew from competition}}

• {{legend|#f4c7b8|Eliminated}}
 * Notes

Weekly scores
Unless indicated otherwise, individual judges' scores in the charts below (given in parentheses) are listed in this order from left to right: Craig Revel Horwood, Motsi Mabuse, Shirley Ballas, Bruno Tonioli.

Week 1
There was no elimination this week; all scores and votes carried over to the following week. Couples are listed in the order they performed.

Week 2
Musical guest: Lewis Capaldi — "Someone You Loved"

Couples are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: David & Nadiya
 * Mabuse: David & Nadiya
 * Tonioli: David & Nadiya
 * Ballas: Did not vote, but would have voted to save David & Nadiya

Week 3: Movie Week
Musical guest: Harry Connick Jr. — "Anything Goes"

Couples are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: David & Nadiya
 * Mabuse: David & Nadiya
 * Tonioli: David & Nadiya
 * Ballas: Did not vote, but would have voted to save David & Nadiya

Week 4
Musical guest: Keith Urban — "Never Comin Down"

Couples are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: Emma W. & Aljaž
 * Mabuse: Emma W. & Aljaž
 * Tonioli: Emma W. & Aljaž
 * Ballas: Did not vote, but would have voted to save Emma W. & Aljaž

Week 5
Individual judges' scores in the chart below (given in parentheses) are listed in this order from left to right: Craig Revel Horwood, Motsi Mabuse, Shirley Ballas, Alfonso Ribeiro.

Musical guest: Mabel — "Don't Call Me Up"

Actor Alfonso Ribeiro filled in as a guest judge while Bruno Tonioli was unavailable while filming for Dancing with the Stars.

Couples are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: Mike & Katya
 * Mabuse: Mike & Katya
 * Ribeiro: Mike & Katya
 * Ballas: Did not vote, but would have voted to save Mike & Katya

Week 6: Halloween Week
Musical guest: Adam Lambert — "Superpower"

After Will Bayley sustained a knee injury, he was unable to perform on the live show. Under the rules of the show, he was granted a bye to the following week. Additionally, after Neil Jones sustained a calf injury in rehearsal, he was unable to perform on the live show. Alex Scott performed with Kevin Clifton instead.

Couples are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: Mike & Katya
 * Mabuse: Catherine & Johannes
 * Tonioli: Catherine & Johannes
 * Ballas: Mike & Katya (Since the other judges were not unanimous, Shirley Ballas, as head judge, made the final decision to save Mike & Katya.)

Week 7
Musical guest: Emeli Sandé — "Shine"

Alex Scott performed again with Kevin Clifton.

Couples are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: Mike & Katya
 * Mabuse: Mike & Katya
 * Tonioli: Mike & Katya
 * Ballas: Did not vote, but would have voted to save Mike & Katya

Week 8
Musical guest: Luke Evans — "Bring Him Home" (from Les Misérables)

Couples are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: Michelle & Giovanni
 * Mabuse: Michelle & Giovanni
 * Tonioli: Michelle & Giovanni
 * Ballas: Did not vote, but would have voted to save Michelle & Giovanni

Week 9: Blackpool Week
Musical guests: Westlife — "Hello My Love", "Uptown Girl" & "World of Our Own"

This week's episode was staged in the Tower Ballroom at the Blackpool Tower in Blackpool, Lancashire.

Couples are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: Saffron & AJ
 * Mabuse: Saffron & AJ
 * Tonioli: Saffron & AJ
 * Ballas: Did not vote, but would have voted to save Saffron & AJ

Week 10
Musical guest: Andrea Bocelli — "Return to Love" & "Time to Say Goodbye" Dance guest: Ellie Fergusson — "Keeping Your Head Up"

Couples are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: Karim & Amy
 * Mabuse: Karim & Amy
 * Tonioli: Karim & Amy
 * Ballas: Did not vote, but would have voted to save Karim & Amy

Week 11: Musicals Week (Quarter-final)
Musical guests:
 * Beverley Knight — "Memory" (from Cats)
 * Idina Menzel — "Seasons of Love" (from Rent)

Couples are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: Alex & Neil
 * Mabuse: Alex & Neil
 * Tonioli: Chris & Karen
 * Ballas: Chris & Karen (Since the other judges were not unanimous, Shirley Ballas, as head judge, made the final decision to save Chris & Karen.)

Week 12: Semi-final
Musical guest: Niall Horan — "Nice to Meet Ya" Dance guest: Carlos Acosta — "Overture from Carmen"

Each couple performed two routines, and are listed in the order they performed.
 * Judges' votes to save
 * Revel Horwood: Karim & Amy
 * Mabuse: Karim & Amy
 * Tonioli: Karim & Amy
 * Ballas: Did not vote, but would have voted to save Karim & Amy

Week 13: Final
Musical guest: Taylor Swift — "Lover"

Each couple performed three routines: one chosen by the judges, their favourite dance of the season, and their showdance routine. Couples are listed in the order they performed.

Dance chart
The couples performed the following each week:
 * Weeks 1–11: One unlearned dance
 * Week 12 (Semi-final): Two unlearned dances
 * Week 13 (Final): Judges' choice, showdance & favourite dance of the series

Ratings
Weekly ratings for each show on BBC One. All ratings are provided by BARB.