Medical cannabis has been legally available in the UK since November 2018,...

https://quebeck-wiki.win/index.php/Is_Neuropathic_Pain_a_Reason_for_Medical_Cannabis_in_the_UK%3F_A_Reality_Check

Medical cannabis has been legally available in the UK since November 2018, though it remains a specialist-only treatment. It is generally considered only after other licensed medications or therapies have failed to manage your condition