The 'Beat of My Drum' singer told Metro that she "of course" wants to return to the girl group, despite launching her solo career.
Roberts said: "I love being in Girls Aloud and I'm so proud of everything we've achieved, especially against the odds in the early days.
"When you're in that bubble you don't see how it looks from the outside but, with the break we've had, I've been listening to the Girls Aloud records and I've turned into a fan. I love the music we've made and everything we stood for."
She added that her favourite songs from her time with the band are Chemistry album track 'Swinging London Town' and Out Of Control single 'The Promise'.
Asked about the bad career advice she has been given, Roberts said: "In the beginning, Cheryl [Cole] and I had fun and were quite mischievous.
"A tour manager once shouted at us, 'You two are out of control. You'll never make it in this industry. Give up now because this is never going to work'. If I'd listened to that I'd be in a very different position now."
> Girls Aloud 'will record new songs in January'
Watch Metronomy's Joseph Mount talk about working with Nicola Roberts: