In the UK, no official government medical cannabis card exists. Access requires...

https://www.herald-dispatch.com/sponsored/how-to-get-a-medical-cannabis-card-in-the-uk-step-by-step/article_a7f9fcb2-55db-40ff-857f-db6b98c92a97.html

In the UK, no official government medical cannabis card exists. Access requires a specialist consultation and a review of your medical records. If prescribed, a card is just an optional tool for proof of lawful use