Since 2018, medical cannabis has been a legal, regulated option for insomnia in...

https://spark-wiki.win/index.php/Is_Medical_Cannabis_Considered_After_Other_Treatments_Fail_in_the_UK%3F

Since 2018, medical cannabis has been a legal, regulated option for insomnia in the UK, accessible via specialist consultants. It is important to note that this is typically considered only after conventional sleep treatments have been exhausted