Hi Leroy and welcome to the forum,
I am not aware of any mortgage products on the market that will allow borrowing of 125% for someone in a current IVA.
In the first instance; I would talk to your current mortgage lender to discuss your options. If for example you are on a repayment mortgage, they may switch it to interest only for a while to allow you to get back on your feet.
If you are already on an interest only mortgage, talk to your current mortgage lender about switching you back to a fixed rate product, which they may do, if you explain your circumstances.
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