Since 2018, medical cannabis has been legal in the UK, accessible via...

https://station-wiki.win/index.php/The_Reality_of_the_UK_Medical_Cannabis_Pathway:_A_Guide_for_Endurance_Runners

Since 2018, medical cannabis has been legal in the UK, accessible via specialist private clinics for patients who have exhausted two standard treatments. It offers a potential route for runners managing specific chronic conditions