UK EV drivers using medical cannabis should note the ‘in charge’ rules mean you...

https://bizzmarkblog.com/what-if-i-am-charging-at-home-on-my-driveway-does-in-charge-apply/

UK EV drivers using medical cannabis should note the ‘in charge’ rules mean you can be tested even while parked and charging. The legal THC limit is 2 micrograms per litre of breath