Medical cannabis has been legal in the UK since November 2018, but it is not a...

https://victor-wiki.win/index.php/Medical_Cannabis_vs_Opioids:_Navigating_Chronic_Pain_Treatment_in_the_UK

Medical cannabis has been legal in the UK since November 2018, but it is not a first-line treatment. To be eligible, you generally must have already tried two or more conventional treatments without success