UK EV drivers using medical cannabis should note the ‘in charge’ rules apply...

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 note the ‘in charge’ rules apply even when parked and charging. The legal THC limit is just 2 micrograms per litre of breath, and a positive roadside swab can lead to a station blood test, prescription or not