I finally got an appointment with a pain management clinic last week. Has taken several years and endlessly being passed off from GPs to addiction services and back again (neither wanting to treat me as GPs only see drug seeking and addiction services only see chronic pain). There are two specialist pain management consultants in all of Wales apparently. Unless you can pay for private treatment it is far from swift and straightfoward to be taken seriously in my experience. Yes when somebody has a clear and unequivocal diagnosis that's one thing but that is not necessarily the case.
I can only go by what I've seen but looks to me that pain management is very much a Cinderella service in the Welsh NHS at least. Tatty clinic in the middle of nowhere split between chronic pain management services and inpatient mental health care. The Welsh NHS is somewhat different to the rest of the UK though so not suggesting this is universal but it appears to be the very bottom of the barrel in terms of funding and support - the fact it's shoehorned in to an inpatient mental health clinic says it all really. Pain management and mental health care being barely on the NHS radar in my small and personal experience.
In fairness I did also get an appointment to see the other pain management consultant who covers Wales a couple years back. That was held in an outpatient ward at a hospital, was insanely overcrowded and I got nothing other than being lied to and patronised to my face with a snotty letter to the GP telling him not to send any more "drug seekers" to see him as he's too busy to waste his time on "people like that" (words very much to that effect anyway).
As far as treatment goes, I was given a relaxation CD and a booklet on positive thinking with a place on their next course pencilled in for the end of the summer. Will have to see how that goes but urgency is very much not a part of the system as far as I can tell - chronic pain being chronic and not acute and all that, I suppose.