Since 2018, the UK has allowed medical cannabis to be prescribed as a regulated...

https://www.flushthefashion.com/health/from-counterculture-to-clinic-how-medical-cannabis-shed-its-image-in-the-uk/

Since 2018, the UK has allowed medical cannabis to be prescribed as a regulated medicine, but only by specialist doctors. Guidance from NICE helps ensure treatments are evidence-based and carefully monitored