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

https://zandersmasterinsights.capitaljays.com/posts/if-i-am-asleep-in-my-car-at-a-charger-after-dosing-can-i-be-charged

UK EV drivers using medical cannabis should be aware of the ‘in charge’ rules that apply even when parked and charging. The legal THC limit is just 2 micrograms per litre of blood