In 2018, the UK’s Misuse of Drugs Regulations 2001 were updated 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, the UK’s Misuse of Drugs Regulations 2001 were updated to allow specialist doctors to prescribe cannabis-based medicines, such as Sativex and Epidyolex