You may be required to pay a broking fee. The fee will depend on your circumstances, an indication is 2.5% of the loan subject to a minimum of £2800.
The overall cost for comparison is 4.6% APR but the actual rate available will depend upon your circumstances. Please ask for a personalised illustration.
Think carefully about securing other debts against your home. Your home may be repossessed if you do not keep up repayments on your mortgage.