For EV drivers using prescribed medical cannabis, the 2mcg/L blood limit still...

https://www.novabookmarks.win/medical-cannabis-is-legal-but-uk-drivers-face-a-strict-2-g-l-thc-limit-a

For EV drivers using prescribed medical cannabis, the 2mcg/L blood limit still applies. While a statutory medical defence exists, you must notify the DVLA and remain fit to drive