Keisha Buchanan was in the original Sugababes line-up with Mutya Buena & Siobhán Donaghy
Keisha Buchanan has vowed never to work with music producer Mark Ronson.

The singer says she and her Sugababes bandmates Heidi Range, 25, and Amelle Berrabah, 24, aren't his biggest fans.

And Keisha, 23, suggests Mark, 33, is only famous because of his musical collaborations.

'We did like him, we were a fan of his work, but I don’t think he likes us very much,’ she tells the Daily Mirror.

‘It’s fine if you don’t like someone but we’ve heard he’s spoken a lot of shit about us.

'I don’t think he’d be half of what he is if it wasn’t for Amy Winehouse. I think he’s a bit of a knob.’



SEE VIDEO Sugababes star Keisha Buchanan hits out at Mark Ronson here>>