Driving with prescribed medical cannabis involves more than just holding a...

https://telegra.ph/Can-I-be-charged-if-I-am-legally-prescribed-but-the-officer-thinks-I-look-impaired-04-23

Driving with prescribed medical cannabis involves more than just holding a prescription. While a medical defence exists for the 2µg/L THC limit, it isn't a free pass. Drivers must notify the DVLA and remain fully fit to operate their vehicle