Medical cannabis has been legal in the UK since 2018, though it is not a...

https://highstylife.com/is-medical-cannabis-a-performance-tool-for-runners-or-just-treatment/

Medical cannabis has been legal in the UK since 2018, though it is not a performance tool. Runners seeking treatment must consult specialist private clinics. Eligibility depends on having a chronic condition that has not responded to first-line treatments