Driving with medical cannabis needs more than paperwork. While a medical...

https://dlf-ne.org/can-i-drive-in-the-uk-if-i-have-a-medical-cannabis-prescription-the-reality-behind-the-wheel/

Driving with medical cannabis needs more than paperwork. While a medical defence covers the 2mcg/L THC limit, you must still meet DVLA fitness standards. Being legal isn't being safe; your responsibility remains