Taking medical cannabis abroad? UK laws do not override local rules, and...

https://wiki-planet.win/index.php/How_to_Store_Medical_Cannabis_When_Travelling:_Protecting_Your_Medication_and_Your_Legal_Standing

Taking medical cannabis abroad? UK laws do not override local rules, and European regulations are inconsistent. To stay safe, always carry your original prescription, a doctor’s letter, and keep medication in its packaging