Professional dancer Robin Windsor has said he is "devastated" that a pre-existing back injury has forced him to pull out of the new series of Strictly Come Dancing.
In a statement, Windsor said: "It's been a really difficult decision, but I plan to focus 100% on my recovery and hope to be back in the ballroom as soon as possible, doing what I love best."
Windsor added: "In the meantime, I wish the rest of the cast and crew the best of luck with the new series, which I'll be watching every week."
Windsor will be replaced by Australian dancer Trent Whiddon, whose previous credits include Dancing with the Stars in the US and Australia.
Also joining the series are Joanne Clifton, sister of the show's Kevin Clifton, and Tristan MacManus.
The professional dancer line-up is completed by: Aliona Vilani, Iveta Lukosiute, Janette Manrara, Karen Hauer, Kristina Rihanoff, Natalie Lowe, Ola Jordan, Aljaz Skorjanec, Anton du Beke, Brendan Cole and Pasha Kovalev.