Since 2018, medical cannabis has been legal in the UK via specialist...

https://finnfazr460.theburnward.com/if-i-keep-waking-at-3am-what-kind-of-insomnia-is-that

Since 2018, medical cannabis has been legal in the UK via specialist prescription for insomnia. It is typically considered only after other treatments haven't worked. As everyone’s response is unique, outcomes vary