Medical cannabis users must be careful. While a defence exists for the 2µg/L...

https://www.primary-bookmarks.win/prescribed-cannabis-you-have-a-medical-defence-against-the-2mcg-l-limit-but

Medical cannabis users must be careful. While a defence exists for the 2µg/L THC limit, you must still meet DVLA fitness standards. Legality isn't a safety pass: if your prescription impairs you, don’t drive