There are some points for considering of re-mortgage:
1) Interest rate
2) Cash rebate
3) Penalty period
4) Legal fee (because you will need to pay 2 times - one for discharge and one for new mortgage). Usually, the main difference will be the legal fee.
1. New interest rate will be P-2.75 -> New offer P-3.
2. Cast rebate: Not remember very clear, seems 0.06%
3. Penalty period: Passed.
4. Legal fee: How much in avg.?