My son is 11, in year 6 at primary school. His behaviour is erratic and very worrying, and it's become increasingly obvious that he urgently needs a MH assessment, so that he can receive the assistance he requires. DS displays all symptom of ADD. I'm not sure about ADHD, as he does not suffer from hyperactivity, however he does demonstrate clear signs of impulsively. More worrying, DS also displays signs of oppositional defiant disorder and conduct disorder. He were referred to CAHMS last year but they were useless. We are now back at CAHMS, but I'm conscious of the crucial time in DS's life (imminent start of secondary school) and would like to assess him privately. Can someone recommend private assessment centres in London? In particular those that are accepted by the NHS. I've heard about the NHS overflow, but I am unsure of where to find those centres. Anyone who has been in a similar situation and has any advice to share, please, please do. Thank you