Stock options excersised and sold after moving abroad

Let's assume I was employed in the UK from 2019 to 2021 and received a stock options grant during that time. Since September 2021 I am no longer a UK tax resident and am now a Polish resident. If I were to exercise and sell those options what is the tax situation for me? Should I pay income tax an NI in the UK on the exercise amount? If yes, if I exercise and sell during the same day do I need to pay any capital gains tax? The price during exercise and sell should be the same so I assume there would be no taxable gains? Or since I'm now a Polish resident should I pay taxes on the transaction in Poland only?

Hi Maciej Piktel,
HMRC cannot comment of hypothetical scenarios or any future events.
Thank you.