Not super different here tbh since you're getting scripted privately. Much more relaxed than the NHS.
Depends on the condition tho. It's easier for me than most because there's no conventional treatment for ASD so all they need is proof I actually have it and the absolute minimum to satisfy the regulations on having tried something "conventional" first.
In most cases you gotta show you tried two "conventional" treatments first before you get scripted.
But none of those exist in my case hehe.