ADHD Son in North London, Need Help!!

[flubi]

Hi !!
I moved 3 months ago to UK, my son 8 was diagnosed early this year with ADHD, I have been trying to get a appointment via my GP with the paediatrician , therapist, etc... but I've been told that I could wait up to a year! I am very frustrated and anxious with the waiting and feeling that I am wasting precious time , so I decided that I will go to a private consultation, but have no idea, who, were, etc.... Can anyone help me and give some recommendations?
Thank You