Since 2018, UK cannabis law has allowed certain medical uses under the Misuse...

https://telegra.ph/Can-I-Grow-Cannabis-in-the-UK-for-Medical-Reasons-08-27

Since 2018, UK cannabis law has allowed certain medical uses under the Misuse of Drugs Regulations 2001, not the 1971 Act. Specialist doctors can prescribe cannabis-based medicines like Sativex and Epidyolex, which remain Class B drugs otherwise