Medical cannabis is legal, but road laws remain strict. You’re still bound by...

https://evpowered.co.uk/feature/medical-cannabis-and-uk-driving-laws-what-ev-owners-must-know/

Medical cannabis is legal, but road laws remain strict. You’re still bound by the 2μg/L THC limit and must meet DVLA fitness standards. While a medical defence exists, legal status doesn’t excuse impairment or override your duty to drive safely