Pallmall1964, it is probably because CAMHs often turn away GP referrals so it is a waste of their time. Parents can refer but these often get turned away too. The most effective way of getting children seen by CAMHs is to go through the school.
llizzie2, children who need extra support need those labels. It is better to sort things out now before they get hampered for life. My brother is dead because his anxiety was not diagnosed or talked about until it was far too late. The investigation by the Mental Health Services told us that nowadays he would have been picked up as a child and the chances are, he would have been able to overcome it.
Momof3, I thoroughly agree with you. Children have the right to be diagnosed so the right support can be put in place. Unfortunately, even with a diagnosis, ignorant people judge behaviour and assume it is bad parenting.