As you will remember from when you bought your property, the mortgage market is a minefield.
Why not utilise the services of Derek Brodie who is a Whole of Market Mortgage Adviser and can assist you in discussing the best mortgage options to you now.
Contact Derek a couple of months before your existing rate finishes so that he can arrange the new mortgage to start when your existing mortgage finishes.
If you are on the standard variable rate with your existing lender then now could be the time to remortgage to a better deal.
When you remortgage the new lender will normal pay for a surveyor of your current property to confirm the value and they will pay for standard legal costs, so this is another saving to remortgaging.