Prescribed cannabis is legal, but driving is a minefield. Even with a medical...
https://nova-wiki.win/index.php/Can_I_lose_my_licence_for_not_telling_DVLA_about_medication_side_effects%3F
Prescribed cannabis is legal, but driving is a minefield. Even with a medical defence, the 2mcg/L THC limit stands, and you must satisfy DVLA fitness rules. Legality isn’t a blanket immunity—it is no substitute for your responsibility behind the wheel.