And just spread it out over a couple of years if needs be?
Actually, it wouldn't make sense to do that. A lot more interest would be paid over the following years by taking that approach. The 2% breake fee limit is very close to 1 years interest if you are on the lowest rate, so it's actually quite favourable even if you have to take the 2% hit.
Taking the example of outstanding mortgage of 200k, interest rate 1.95% fixed for a few more years and 100k overpayment:
Option 1: Pay off 100k, and max break fee will be capped at 2% or 2,000 euro. Remaining balance is 100k.
Option 2: Pay off 10% of balance, 20,000 and there is no break fee. Remaining balance is 180k.
With Option 2 at 1.95% interest rate, approximately 1,568 will be paid in extra interest over the next 12 months. And the following year after another 10% off the balance, another 1,300 or so will be paid in extra interest - the exact amount depends on the balance and capital repayments each year. And so on, additional interest is being paid until the balance reaches 100k. And by that time, in comparison with Option 1, the outstanding balance will also be greater.