EV drivers using medical cannabis: legality isn't immunity. A 2µg/L THC limit...

https://dlf-ne.org/can-i-drive-in-the-uk-if-i-have-a-medical-cannabis-prescription-the-reality-behind-the-wheel/

EV drivers using medical cannabis: legality isn't immunity. A 2µg/L THC limit applies, and the DVLA requires fitness to drive. A medical defence exists, but impairment remains a risk. Being legal does not replace your duty of care behind the wheel.