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

https://evpowered.co.uk/feature/electric-vehicles-and-medical-cannabis-what-uk-drivers-need-to-know-about-the-law/

UK EV drivers using medical cannabis should be aware that the ‘in charge’ rules mean you’re treated as driving while charging. With a 2 micrograms per litre THC limit, even those with prescriptions can face roadside swabs