In 2018, UK cannabis law was updated through the Misuse of Drugs Regulations...

https://augustjygg178.almoheet-travel.com/can-i-grow-cannabis-in-the-uk-for-medical-reasons

In 2018, UK cannabis law was updated through the Misuse of Drugs Regulations 2001—not the older Misuse of Drugs Act 1971. This change allows specialist doctors to prescribe cannabis-based medicines like Sativex and Epidyolex under Schedule 2