Having an undetectable viral load and continuing to stay on medication means you are not putting your partner(s) at risk. There is no moral imperative to disclose when you are not putting your partner at risk. You may want to consider the pros and cons of disclosing your status with your partner(s). Scotland does not lawfully require you to disclose your status to anyone. It is important to keep in mind that many discriminatory HIV criminalisation laws exist in some countries that require you to disclose your status, even when there is no risk of transmissions.