(RTTNews) - U.K.'s mortgage approvals increased to 4.23 billion pounds in November from 3.65 billion pounds in the October, the Building Societies Association, or BSA, indicated Thursday. Getting a refinance mortgage loan is a smart move for any homebuyer. This is especially true if the interest rates are low. In the world of finance, interest rates directly affect the way mortgage rates behave. So if the interest rates are low, then mortgage rates will also be low.