Prescribed cannabis doesn’t grant road immunity. While a medical defence exists...

https://www.bookmarking-keys.win/navigating-the-2mcg-l-thc-limit-with-a-medical-cannabis-prescription-can-feel

Prescribed cannabis doesn’t grant road immunity. While a medical defence exists for the 2μg/L THC limit, you must remain fit to drive. Always notify the DVLA if medication affects you. Legality is not a pass: safety remains your sole responsibility.