In 2018, UK cannabis law changed through an update to the Misuse of Drugs...
https://magic-wiki.win/index.php/What_Is_Sativex_and_Who_Can_Get_It_in_the_UK%3F
In 2018, UK cannabis law changed through an update to the Misuse of Drugs Regulations 2001—not the Misuse of Drugs Act 1971