If you’re an EV driver prescribed medical cannabis, don’t assume legality...
https://www.alphabookmarks.win/using-prescribed-cannabis-as-a-driver-requires-caution-while-a-2mcg-l-thc
If you’re an EV driver prescribed medical cannabis, don’t assume legality implies immunity. The 2μg/L THC limit still applies. While a medical defence exists, you must report your status to the DVLA