UK cannabis law shifted in 2018 when changes to the Misuse of Drugs Regulations...

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

UK cannabis law shifted in 2018 when changes to the Misuse of Drugs Regulations 2001 allowed certain cannabis-based medicines to be prescribed by specialist doctors