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

https://evpowered.co.uk/feature/medical-cannabis-and-uk-driving-laws-what-ev-owners-must-know/

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