The seventh series of Strictly Come Dancing commenced on BBC One on 18 September 2009. Series 5 winner, Alesha Dixon, joined the judging panel, replacing Arlene Phillips. Darcey Bussell was a guest judge from the quarter final onwards.
The show on 7 November was filmed from the Blackpool Tower Ballroom for the first time since the Grand Final of series 2.
Series 7 was won by sports presenter Chris Hollins and his professional partner Ola Jordan.
| Celebrity | Professional partner | Voted out |
| Martina Hingis | Matthew Cutler | Week 1 (Mixed round) |
| Richard Dunwoody | Lilia Kopylova | Week 2 (Mixed round) |
| Rav Wilding | Aliona Vilani | Week 3 |
| Lynda Bellingham | Darren Bennett | Week 4 |
| Joe Calzaghe | Kristina Rihanoff | Week 5 |
| Jo Wood | Brendan Cole | Week 6 |
| Zoe Lucker | James Jordan | Week 7 |
| Craig Kelly | Flavia Cacace | Week 8 |
| Phil Tufnell | Katya Virshilas | Week 9 |
| Jade Johnson | Ian Waite | Withdrew due to injury |
| Ricky Groves | Erin Boag | Week 10 |
| Natalie Cassidy | Vincent Simone | Week 11 |
| Laila Rouass | Anton du Beke | Week 12 |
| Ali Bastian | Brian Fortuna | Week 12 |
| Ricky Whittle | Natalie Lowe | Runners-up |
Champions
Chris Hollins and Ola Jordan!