You can try but even the cc does not guarantee that you can lease a car.
IVA started March 2011, Completed March 2016 and certificate issued 11 days after final payment. It was not always easy but then some of the best decisions aren't.
I think as you are still bound by the iva until yiu have the completion certificate so imagine you wiuld still need consent from IP. Couldn't imagine itwould be an issue if you can find someone to do it. We used Dunctons / Mobeybarn. Really expensive but we needed a car!