The "Good Good" singer was one five members the British girl group that went on hiatus in 2015 but in the years since never ficially split.
Speaking to Hunger magazine about her new single, Vanessa confirmed that she would not be returning to the group.
"I don't think I could go back," Vanessa explained. "I've got so much that I want to do. There's no space mentally for me to go back.
"As time goes on, I know it just wouldn't feel right for me."
Her Saturdays bandmate, Frankie Bridge, has said the girls would be heading back to the studio to make music in 2016 but that hasn't been the case.
Frankie later said that she music wasn't exciting for her anymore.
"I know how fortunate I've been to be in two successful bands, but I was getting to the point where I'd be performing and thinking about what I was going to have for lunch," the mother--two explained.
"I never got to be in musical theatre, so I maybe want to do that at some point. But not so much music - unless I get the bug back. You have to dedicate a lot time, and at the minute that's just not what I want to do."
Meanwhile, Vanessa has been working on her own music which delivers a more R&B sound that she says suits her far better than The Saturdays pop fering.
"I came from a girlband which was very much pop and very different to this, but I've always been such an R&B fan," White explained.