TCY

Hello, I have similar ESPP and RSU from my company, I came from Hong Kong last year April and most of the ESPP and RSU were gained before I become a UK Tax resident. I 'm not sure if I still need to report for capital gain tax with 2023-2024 since I sold some of the stocks after I relocate to Uk. If i need to report for capital gain tax, how to calculate the original value of my stocks? Should I use the market value of the date I become UK tax resident or using the original market value I gain when I was in Hong Kong? Thank You.