Reporting Capital Gains Tax When Below the Annual Exempt Amount

Hello, I have sold shares that resulted in a gain, but the amount is less than the annual exempt amount of £3,000. I am not currently registered for Self Assessment. Do I need to report this to HMRC? If so, what is the deadline for doing so? Additionally, if the shares were sold in a foreign currency (e.g., US dollars), can I use an online website for the currency conversion, or is there a specific official source that I must use for these calculations? Thank you for your assistance. Best regards,

Hi volavoka,
So long as your combined gains in the tax year, are below the annual exempt allowance, then there is no need to report them to HMRC.
Thank you.