UK EV drivers prescribed medical cannabis should know the ‘in charge’ rules...
https://yenkee-wiki.win/index.php/Can_I_Be_Charged_If_I%E2%80%99m_in_a_Public_Car_Park_and_Not_on_the_Road%3F
UK EV drivers prescribed medical cannabis should know the ‘in charge’ rules mean you can be tested even while parked and charging. A roadside swab can detect THC, and if over 2 micrograms per litre in blood, it risks prosecution