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

https://super-wiki.win/index.php/What_Symptoms_Should_I_Track_Before_a_Medical_Cannabis_Assessment%3F

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.