There’s no official UK medical cannabis card. Access starts with a specialist...

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

There’s no official UK medical cannabis card. Access starts with a specialist consultation reviewing your medical history. If eligible, you get a prescription. While optional, many patients carry a clinic-issued card as helpful proof of lawful use.