Hi David
That would be absolutely fine. If you meet a new partner and decide to settle down together, there would be nothing stopping them putting down the deposit - although for their own security do get a declaration of trust drawn up which identifies the deposit monies as being paid by that person. This protects you both for the future in the event of separation, or dare I say it a future debt problem!
So long as your share of the mortgage payment, and other related household costs, did not disturb your ability to fund your IVA contributions, I think your Supervisor would be delighted to provide you with permission to take on a credit agreement, and wish you well for the future.
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
For further details contact me at
http://www.melaniegiles.com and view my IVA blog at:
http://melaniegiles.blogs.iva.co.uk