UK cannabis law saw a key update in 2018 with changes to the Misuse of Drugs...
https://zulu-wiki.win/index.php/I_Thought_Cannabis_Was_Legal_in_the_UK_%E2%80%93_Why_Can_I_Still_Be_Arrested%3F
UK cannabis law saw a key update in 2018 with changes to the Misuse of Drugs Regulations 2001, not the main Misuse of Drugs Act 1971