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

https://tango-wiki.win/index.php/Is_Exceeding_the_THC_Limit_an_Offence_Even_If_I_Drive_Perfectly%3F

UK EV drivers using medical cannabis should be aware that ‘in charge’ rules mean they can face roadside drug tests even while parked and charging. The legal THC limit is very low—just 2 micrograms per litre of blood