There may also be early repayment charges if you decide to repay what you owe within a short time after taking out the deal. (nationaldebtline.org)
Could pay off your mortgage balance quicker, by taking advantage of our option to make overpayments of up to 10 % each year on your mortgage balance without incurring early repayment charges (sainsburysbank.co.uk)
For example, if 10 % of your mortgage is # 20,000 and you make an overpayment of # 25,000, you'll pay an early repayment charge on # 5,000. (sainsburysbank.co.uk)