Since 2018, medical cannabis is legal in the UK via specialist private clinics....

https://www.bookmarking-presto.win/summary-82-words-since-2018-medical-cannabis-has-been-legal-in-the-uk

Since 2018, medical cannabis is legal in the UK via specialist private clinics. Access requires proof of failed prior treatments. For runners, caution is vital. WADA strictly prohibits THC in-competition, and traces can linger in your system for weeks