Medical cannabis has been legal in the UK since November 2018, though it...

https://angelowlnv711.yousher.com/can-my-gp-prescribe-medical-cannabis-in-the-uk-a-guide-to-navigating-the-rules

Medical cannabis has been legal in the UK since November 2018, though it remains strictly regulated. It cannot be prescribed by a GP; you need an assessment from a specialist consultant