In 2018, the UK amended the Misuse of Drugs Regulations 2001—not the Misuse of...

https://future-wiki.win/index.php/Is_There_a_Difference_Between_Lawful_to_Possess_and_Legal_to_Buy_in_the_UK%3F

In 2018, the UK amended the Misuse of Drugs Regulations 2001—not the Misuse of Drugs Act 1971—to allow specialist doctors to prescribe cannabis-based medicines