This is a managed rate so the ...Variable mortgages: Should you make the switch?MyFinances.co.uk, UK -48 minutes agoWhile trackers follow the Bank of England base rate by a given margin, discounted mortgages are based on the lender's SVR. To make sure that you're getting the best mortgage rate available in the market, it is important that you also obtain all information on important costs involved. Getting the best mortgage rate is knowing how much of a down payment you can afford. Aside from that, getting the best mortgage rate is knowing what is the interest rate of your loan.