Legal doesn’t mean safe. For EV drivers on medical cannabis, the 2mcg/L THC...

https://noon-wiki.win/index.php/What_does_GOV.UK_actually_say_about_driving_on_prescribed_medicines%3F

Legal doesn’t mean safe. For EV drivers on medical cannabis, the 2mcg/L THC limit is strict. A medical defence exists, but it doesn’t bypass DVLA fitness-to-drive rules