In 2018, UK cannabis law was updated through the Misuse of Drugs Regulations...

https://www.bookmark-friend.win/since-2018-uk-cannabis-law-has-allowed-specialist-doctors-to-prescribe-certain-1

In 2018, UK cannabis law was updated through the Misuse of Drugs Regulations 2001, not the Misuse of Drugs Act 1971. This change allowed specialist doctors to prescribe cannabis-based medicines like Sativex and Epidyolex under Schedule 2