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

https://victor-wiki.win/index.php/What_Evidence_Helps_Prove_the_Statutory_Medical_Defence%3F

UK EV drivers using medical cannabis should be aware of the ‘in charge’ rules that apply when parked and charging. Even with a prescription, the legal THC limit of 2 micrograms per litre of blood applies