Since the 2018 rescheduling, NHS doctors can technically prescribe medical...

https://vergemagazine.co.uk/can-you-get-medical-cannabis-on-the-nhs-a-guide-to-the-uk-system/

Since the 2018 rescheduling, NHS doctors can technically prescribe medical cannabis, but it’s usually rare because only specialists can do so and NHS support is limited to specific uses: nabilone for nausea, a trial cannabis spray for MS spasticity