The 23-year-old was in Mini Viva with pal Frankee Connolly, having a top 10 single with 'Left My Heart In Tokyo' and going on tour with The Saturdays and Girls Aloud.
However the pair's follow up single I Wish didn't do as well, resulting in the pair's album being axed and the duo being dropped by their record company.
"I've always wanted to be a singer since I was four," Britt told Xtra Factor's Caroline Flack. "I've had a little bit of a success with Mini Viva, we had a top 10 single but we were let go by the record company."
Britt performed Amy Winehoue's You Know I'm No Good for the judges.
"I like your energy and I thought the singing was Okay," said Louis Walsh.
Nicole added: "I think you have some soul to your voice."
"Britt, I liked your performance, I loved the energy, good confidence," Gary Barlow commented.
Tulisa said: "You've got really strong stage presence and you're quite a quirky character."
It was four yeses for Britt, who is now through to bootcamp.