There are mortgage plans out there to suit people in a whole range of financial situations and so if your credit score is less than perfect, don't worry, the chances are that there is a product out there for you. If you do have a bad credit score, while you will likely still be able to get some kind of mortgage, you won't be able to benefit from the best deals; you'll probably be offered slightly higher than average interest rates, or maybe a lower LTV ratio. This is just to reflect the increased risk that the lender is taking by allowing you to borrow money with a less than perfect track record of repaying in the past.