Most lenders offer the option to borrow more money against the security of your home.
If your existing fixed interest rate mortgage is midway through its term, you might not want to pay any Early Repayment Charges, so a Further Advance might be an option for you. We can research the market for you, to see if it is to your benefit to take a Further Advance from your existing lender, or whether a remortgage to a new lender might be more cost-effective for you.