There is no UK government medical cannabis card. Access requires a specialist...

https://keeganseol681.lowescouponn.com/why-do-clinics-say-the-card-is-the-final-step-not-the-first

There is no UK government medical cannabis card. Access requires a specialist consultation and a review of your medical records for a prescription. Some patients carry an optional card as proof of lawful use to provide clarity when needed.