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

https://josuedumv023.tearosediner.net/why-are-most-medical-cannabis-prescriptions-in-the-uk-for-unlicensed-products

In 2018, the UK updated the Misuse of Drugs Regulations 2001 to allow specialist doctors to prescribe certain cannabis-based medicines, like Sativex and Epidyolex. Cannabis remains a Class B drug for recreational use