Medical cannabis has been legal in the UK since 2018 for certain conditions...

https://www.easybookmarkings.win/since-2018-medical-cannabis-has-been-a-legal-uk-option-for-sleep-but-it-is

Medical cannabis has been legal in the UK since 2018 for certain conditions after other treatments have been exhausted. It is always managed by specialists rather than as a first-line option