When a company is targeting people with adverse credit ratings for loans and mortgages, they consider that the risk of people discovering that they are unable to pay their monthly fees is higher than someone with a better credit rating. They will then, in many cases, charge a higher percentage interest rate so that they can make slightly more money out of the people who can pay, so that overall they will still make money.

This isn't always the case though, because over the last ten to fifteen years the mortgage market has become very competitive, and it is possible to find low rates with adverse risk lenders as well as the high street lenders. The best thing to do is sop around to find the best rate, but be aware that each application will mean a credit check is performed against you, and each credit check made against you that fails, will drop your credit rating a little further. So make sure your credit rating is as strong as possible before you start the process.