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

https://penelopesimpressivejournal.urbanvellum.com/posts/can-mixing-prescribed-cannabis-and-alcohol-make-things-worse-legally

UK EV drivers using medical cannabis should be aware that ‘in charge’ rules apply even when parked and charging. The legal THC limit is just 2 micrograms per litre of blood