Since November 2018, medical cannabis has been legal in the UK when prescribed...

https://highstylife.com/why-do-uk-clinics-still-follow-strict-prescribing-standards-for-cannabis/

Since November 2018, medical cannabis has been legal in the UK when prescribed by a specialist doctor. Many patients now use private clinics to navigate this path. The process begins with digital onboarding and the sharing of existing health records