In 2018, UK law changed the Misuse of Drugs Regulations 2001 to allow...

https://dlf-ne.org/is-cannabis-legal-in-the-uk-or-not-in-2026-clearing-up-the-confusion/

In 2018, UK law changed the Misuse of Drugs Regulations 2001 to allow specialist doctors to prescribe certain cannabis-based medicines, like Sativex and Epidyolex. Yet, recreational cannabis remains a Class B drug