Prescribed cannabis is rising, but road rules are strict. The 2µg/L THC limit...

https://www.bookmark-url.win/medical-cannabis-is-legal-but-roadside-tests-don-t-distinguish-between

Prescribed cannabis is rising, but road rules are strict. The 2µg/L THC limit applies regardless of your prescription. A ‘medical defence’ exists, but isn't immunity if impaired. Keep DVLA records current