UK drivers using medical cannabis should know that the ‘in charge’ rules apply...

https://stephenczub458.theglensecret.com/does-engine-off-matter-at-all-for-section-4-being-in-charge

UK drivers using medical cannabis should know that the ‘in charge’ rules apply even when parked and charging an electric vehicle. The legal THC limit is 2 micrograms per litre of blood