Since 2018, medical cannabis has been legally available in the UK via...

https://wiki-aero.win/index.php/Why_Do_Some_People_Struggle_to_Stick_With_CBT-I_Routines%3F

Since 2018, medical cannabis has been legally available in the UK via specialist prescribing. Typically considered only after conventional sleep treatments have been exhausted, it is not a first-line option for insomnia