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

https://uniform-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 of the ‘in charge’ rules, which apply when parked and charging. If THC exceeds 2 micrograms per litre in a breath test, roadside swabs can trigger blood tests, even with a prescription