In 2018, UK cannabis law saw a key change—not to the Misuse of Drugs Act 1971,...

https://mill-wiki.win/index.php/Can_I_Possess_Cannabis_in_the_UK_If_I_Have_a_Prescription%3F

In 2018, UK cannabis law saw a key change—not to the Misuse of Drugs Act 1971, but to the Misuse of Drugs Regulations 2001