Whether it will be a good idea for you to remortgage depends on a number of factors, including your goals and your personal circumstances.
However, in general, if interest rates are lower than you are currently paying on your mortgage, it may be a good time to remortgage.
If interest rate are higher than you are currently paying, it may be better to look at other options, such as a second mortgage or a personal loan (if you aim is to borrow more).
If you are not sure whether now is the right time to remortgage, it is a good idea to speak to an independent mortgage broker who will be able to offer impartial advice on Buckinghamshire BS mortgages as well as other lenders.