The singer appeared on the BBC ballroom show in 2016, with Louise and husband Jamie Redknapp announcing their separation the following year.
Writing in her autobiography, You’ve Got This, Louise said taking part in Strictly “wasn’t worth” the heartache it subsequently put her loved ones through.
Karwai Tang via Getty ImagesLouise Redknapp took part in Strictly Come Dancing in 2016
She wrote: “If I’d done the show four years earlier, this wouldn’t have happened. I wouldn’t have walked away from my marriage.”
She added that starring on Strictly “simply wasn’t worth putting anyone I loved or love through the heartache”.
Louise, who was partnered with pro dancer Kevin Clifton, did acknowledge that the show gave her a “new path” and showed she “could find work again”, but said: “I still wish I’d done things differently because I feel like I hurt a lot of people and I’ll always be sorry for that.