Prescribed medical cannabis doesn't exempt you from road laws. While a medical...

https://mike-wiki.win/index.php/If_I_am_under_the_THC_limit,_am_I_definitely_safe_legally%3F

Prescribed medical cannabis doesn't exempt you from road laws. While a medical defence exists for the 2mcg/l THC limit, the DVLA requires you to be fit to drive. Legality isn't a safety net; your responsibility for road safety remains absolute.