Since 2018, medical cannabis has been a legal, regulated option in the UK....

https://www.bookmarkzoo.win/since-2018-medical-cannabis-has-been-available-in-the-uk-via-specialist

Since 2018, medical cannabis has been a legal, regulated option in the UK. Specialists typically consider it only after other treatments prove ineffective. Because experiences vary, it is best viewed as a clinical pathway requiring professional oversight.