Prescribed medical cannabis doesn’t grant EV drivers an automatic exemption...

https://www.ready-bookmarks.win/using-prescribed-cannabis-as-a-driver-requires-caution-while-a-2mcg-l-thc

Prescribed medical cannabis doesn’t grant EV drivers an automatic exemption from UK road laws. While a medical defence exists for the 2mcg/L THC limit, you must still satisfy strict DVLA fitness-to-drive requirements