Prescribed cannabis? You must still meet DVLA fitness standards and stay under...

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

Prescribed cannabis? You must still meet DVLA fitness standards and stay under the 2mcg/L THC limit. While a 'medical defence' exists, legality doesn't replace responsibility. If you're impaired, the law won't shield you. Stay safe and informed.