There is no government-issued medical cannabis card in the UK. Access requires...

https://fernandoposo361.image-perth.org/what-follow-up-care-do-medical-cannabis-patients-need-in-the-uk

There is no government-issued medical cannabis card in the UK. Access requires a specialist consultation and a valid prescription based on your medical records. While optional, many patients carry a private card as proof of lawful use