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

https://zionsniceinsight.readspirex.com/posts/what-are-the-penalties-for-being-over-the-thc-limit-in-the-uk

UK EV drivers using medical cannabis should be aware of the ‘in charge’ rules, which mean you can be tested even while parked and charging. The legal THC limit is 2 micrograms per litre of breath