You need to contact your old IP company to ask for a copy. Are your bank doing this claim?
Sharing from experiences of dealing with debt
The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.
Bob Marley. http://kallis3.blogs.iva.co.uk
PPI could still belong to the IVA regardless of completion. A decade after the fact and records are likely to have been destroyed anyway.
As Kallis says, your old firm might still have a copy. Other than that the Insolvency service might have kept their copy (long shot). Finally, have a search through your old, archived, emails ... you might have been sent a copy.
My opinions are merely that .. opinions based on experience. Always seek professional advice.
IVA Completed 23rd July 2013 .... C.C. 10th January 2014 http://foggy.blogs.iva.co.uk