In the UK, medical cannabis prescriptions start with a specialist assessment at...

https://wiki-cable.win/index.php/Can_My_GP_Prescribe_Medical_Cannabis_in_the_UK_or_Do_I_Need_a_Specialist%3F

In the UK, medical cannabis prescriptions start with a specialist assessment at a private clinic or very rarely through the NHS. If suitable, medication is supplied by a regulated pharmacy to ensure safety and quality