Scottish organ donation law changes to an opt out system today (26 March 2021). This means that if you die in circumstances where you can donate, you will be considered to be a donor when you die, unless you have chosen to opt out or are in an excluded group.
Your loved ones will still be consulted about your views to ensure that donation does not proceed if you would not have wanted it to. Organ and tissue donation remains a personal decision and you have a choice.