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

https://www.tntmagazine.com/leisure-entertainment/leisure/why-is-cannabis-still-illegal-in-the-uk-the-history-behind-medical-cannabis-law/

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