Medical cannabis has been legal in the UK since November 2018 for specific...

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

Medical cannabis has been legal in the UK since November 2018 for specific conditions, but it is not a first-line treatment. You require a prescription from a specialist doctor, typically after other licensed options have failed to help