No government-issued cannabis card exists in the UK. Access begins with a...

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

No government-issued cannabis card exists in the UK. Access begins with a specialist consultation and a review of your medical records for a private prescription. Clinics may issue a card as optional proof of lawful use, but it is not a legal requirement.