Based in Preston and Southport, Key Mortgage Advice claim to provide the easiest way to buy a property and say they give reliable and independent mortgage advice. If you have used Key Mortgage Advice let us know if you agree with this, and leave a Smart Money People review below. Our Key Mortgage Advice reviews are written by people like you to help create more transparency within Financial Services aiding you in your search to get a better understanding of what their customers think.