There’s no official UK government cannabis card. Access is prescription-first...

https://www.bookmarkmaster.win/in-the-uk-there-s-no-official-government-medical-cannabis-card-access-is

There’s no official UK government cannabis card. Access is prescription-first via a specialist consultant after reviewing your medical records. If prescribed, you can opt for a private clinic card as optional proof of lawful use for police or employers.