It is possible - but I suggest that you take advice from an insolvency practitioner. If your other non-associated creditors are also prepared to support your proposals, then there should be no reason why they should not be presented.
You could take a look at www.iva.com for a list of companies and some reviews of these as a good starting place. Always talk to 2 or 3 professionals to ensure you get that all important impartial case specific advice. All the best x
IVA final payment left the bank on the 26th January 2013...looking forward to a debt free future.