Since cannabis was rescheduled in 2018, NHS doctors can technically prescribe...

https://wiki-book.win/index.php/Is_UK_Medical_Cannabis_Creating_a_Two-Tier_Healthcare_System%3F

Since cannabis was rescheduled in 2018, NHS doctors can technically prescribe it, but only specialists can do so, and NHS support is usually limited to a few specific uses—like nabilone for nausea, a trial MS spasticity spray