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

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 of ‘in charge’ rules which apply even when parked and charging. The legal THC limit is just 2 micrograms per litre of blood, so a roadside swab can still trigger a blood test