Hi Lynne and welcome to the Forum.
Your mortgage should not be affected by the IVA although you may be expected to release equity via a remortgage in the final year. Your IP should be able to explain all the pros and cons but if in doubt take a second opinion.
Hi Lynne and welcome to the forum, I would always suggest taking 2 if not 3 opinions of prospective IP's this way you will be sure to find one who will explain all the details in full and you will build up a good working relationship with your IP as it can be a long journey (60 or 72 months).
As long as you can pay your mortgage you'll be okay, although as the others have said, you maybe required to switch onto interest only and raise equity in the 4th year of an IVA. If equity cannot be raised then the IVA maybe extended.
Your IP will go through all this with you prior to you signing anything.
I did not have to change my mortgage to interest only.
Check out one or two companies and ask advice about your mortgage.
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