Navigating UK medical cannabis as an expat requires a specialist, not a card....

https://yucatanmagazine.com/how-expats-in-the-uk-access-medical-cannabis-prescriptions/

Navigating UK medical cannabis as an expat requires a specialist, not a card. Since the NHS rarely prescribes, you must provide your full medical records to a private clinic for review. Please stay cautious regarding international travel