In 2018, UK cannabis law was amended through changes to the Misuse of Drugs...

https://cristiansuniquejournals.cloudhinter.com/posts/why-does-uk-medical-cannabis-rely-on-private-clinics-so-much

In 2018, UK cannabis law was amended through changes to the Misuse of Drugs Regulations 2001—not the Misuse of Drugs Act 1971—allowing specialist doctors to prescribe cannabis-based medicines like Sativex and Epidyolex under Schedule 2