UK EV drivers using medical cannabis should be aware of the ‘in charge’ rules....

https://www.deltabookmarks.win/uk-ev-drivers-using-medical-cannabis-need-to-be-careful-even-when-parked-and

UK EV drivers using medical cannabis should be aware of the ‘in charge’ rules. Even when parked and charging, the 2 micrograms per litre THC limit applies. A roadside swab can trigger a compulsory blood test, regardless of prescription status