basiclly doing the PPI reclaim on cards already and personal loan, but can you do it on morgages and business loans and can they close you down as a result ie once reclaimed they tell you to settle your finall balance?

I am doing a fictional report for one of my business classes, and was wondering how a group of investors would go about acquiring loans for $100 million or more? This investment would be to buy land, a large business, hotel, etc…

I want to start a business. I want to know which nationalised bank(s) issue business loans. I am not an income tax assessee. will I be able to pledge my house to get a loan ?