In 2018, UK cannabis law was updated—not by changing the Misuse of Drugs Act...

https://www.cast-bookmarks.win/uk-cannabis-law-changed-in-2018-with-an-update-to-the-misuse-of-drugs

In 2018, UK cannabis law was updated—not by changing the Misuse of Drugs Act 1971, but by amending the Misuse of Drugs Regulations 2001