For EV owners using prescribed medical cannabis, a statutory defence exists,...

https://www.normalbookmarks.win/driving-with-medical-cannabis-needs-more-than-paperwork-while-a-medical-1

For EV owners using prescribed medical cannabis, a statutory defence exists, but it’s not a free pass. You must stay under the 2mcg/L THC limit, remain fit to drive, and inform the DVLA. Remember: legality never replaces your personal responsibility.