Since becoming legal in the UK in 2018, medical cannabis remains an option...

https://raymondnngc161.tearosediner.net/medical-cannabis-for-sleep-what-should-you-do-if-your-sleep-is-getting-worse

Since becoming legal in the UK in 2018, medical cannabis remains an option strictly under specialist oversight and only after other treatments have been exhausted. It is not a first-line choice for sleep disorders