Medical cannabis prescriptions aren't a road pass. You’re still bound by the...

https://wiki-mixer.win/index.php/I_Only_Use_Cannabis_Oil_at_Night:_Can_I_Drive_the_Next_Morning%3F

Medical cannabis prescriptions aren't a road pass. You’re still bound by the 2mcg/L THC limit and DVLA fitness standards. A medical defence is no substitute for your duty to drive safely