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

https://high-wiki.win/index.php/Where_Do_You_Get_the_Medical_Cannabis_Card_After_the_Prescription_is_Issued%3F

There is no government-issued medical cannabis card in the UK. Access requires a specialist consultation and your medical records. If prescribed, you can opt for a private ID card to easily verify your lawful status, though this remains entirely optional.