UK cannabis laws changed in 2018 with updates to the Misuse of Drugs...

https://cristiansuniquejournals.cloudhinter.com/posts/does-the-uk-medicines-regulator-approve-most-cannabis-products

UK cannabis laws changed in 2018 with updates to the Misuse of Drugs Regulations 2001, not the Misuse of Drugs Act 1971. This allowed specialist doctors to prescribe cannabis-based medicines like Sativex and Epidyolex under Schedule 2