Reporting Capital Gain the First Time

BNO visa was issued to me on 15 Jan 2023. I relocated to UK on 5 May 2023, and have been keeping some investments (shares and unit trusts) in HK with interest earning and investment gain during the year of 2023. When reporting interest income and capital gain, I wonder whether they should be calculated from (i) 15 Jan 2023, (ii) 5 May 2023, or other dates. Please advise. Thank you

Hi Thomas,
The gain will be based on the difference of what you paid for them and what you sold them for. please refer to guidance at https://www.gov.uk/tax-sell-shares.
Thank you.