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

https://griffinucyk847.iamarrows.com/is-the-medical-defence-automatic-if-i-show-my-prescription

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