Even with a prescription, EV drivers must stay under the 2mcg/L THC limit. A...

https://www.bookmark-jungle.win/driving-with-medical-cannabis-needs-more-than-paperwork-while-a-medical

Even with a prescription, EV drivers must stay under the 2mcg/L THC limit. A medical defence exists, but DVLA rules remain key. Being prescribed cannabis is legal, but it doesn't excuse impairment. Legality doesn't replace personal responsibility.