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

https://dlf-ne.org/what-is-the-biggest-mistake-prescribed-patients-make-at-charge-points/

UK EV drivers using medical cannabis should be aware that the 'in charge' laws apply even when parked and charging. With a strict 2 micrograms per litre THC limit, a positive roadside swab can trigger a blood test, regardless of a prescription