Hi and welcome to the forum
I am not a mortgage broker and therefore cannot offer you any advice. However, there are companies who regularly post on this forum who deal with situations such as yours who I am sure will advise you and give you the best solution.
It is "Great" that you are in a position to offer a full and final settlement to your IVA. You
are able to start afresh once this is completed - you were not "missold", but there are certain restrictions which are going to apply to you. You were/are a debtor who for whatever reasons, were not able to pay your creditors, hence your entering into an IVA. Therefore, it stands to reason that anyone offering credit to someone in your position is going to want some form of deposit from you.
Why don't you speak to your colleague who went BR and have a chat to the broker/lender who assisted them in getting a mortgage? Perhaps they will offer you the 100% mortgage you are after.
Take a "stroll" and read some of the postings of others who have been in a similar situation.
Sue
Ho Hum! Think I'll bang my drum!
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http://sadsack.blogs.iva.co.uk/