UK EV drivers using medical cannabis should be aware that 'in charge' laws...

https://nova-wiki.win/index.php/Why_Can_I_Feel_Fine_But_Still_Be_Over_the_2_Micrograms_THC_Limit%3F

UK EV drivers using medical cannabis should be aware that 'in charge' laws apply even when parked and charging. The legal THC limit is 2 micrograms per litre of blood, and a roadside swab can prompt a blood test at the station