UK medical cannabis is typically vaporised, not smoked, to avoid harmful...
https://deansbestchat.hexaforgey.com/posts/what-s-the-plain-english-reason-smoking-will-never-be-the-licensed-route-in-the-uk
UK medical cannabis is typically vaporised, not smoked, to avoid harmful toxins. Vaporiser temperature and device type—conduction vs convection—impact how effectively cannabinoids are delivered