converted a foreign currency to sterling

Many years ago, before becoming a tax resident in the UK, I used foreign currency X to buy foreign currency Y. I became a tax resident in the UK in the 2023/24 tax year and converted foreign currency Y to sterling to support my living here. Do I need to report such conversion (from Y to sterling) in the 2023/24 self-assessment? If yes, how? Report this under capital gain tax?

Hi,
If this is for personal use only then no.
Thank you.