Since cannabis was rescheduled in 2018, NHS prescribing is technically allowed...

https://oscar-wiki.win/index.php/What%E2%80%99s_the_Difference_Between_RCT_Evidence_and_Patient_Registries_for_Cannabis%3F

Since cannabis was rescheduled in 2018, NHS prescribing is technically allowed but remains rare, limited to specialist doctors and only for a few conditions—like nabilone for nausea, MS spasticity spray trials