
Flucturations in the Bank of England Base Rate can have an affect on your mortgage payments, thus potentially increasing or decreasing what you pay.
Many mortgages are linked directly to the Bank of England Base Rate (BBR). For example a Bank Base Rate Tracker mortgage will move inline with any changes set by the Bank of England.
For some, these become more popular in an environment of falling interest rates.
For more information on the Bank of England Base Rate please go to the Bank of England Official Site.