I'm sorry to hear that your son is having a hard time. I'm a play therapist and parent coach based in South London. I don't do Ed. Psych. assessments but I do support lots of children and families with concerns about behaviour or social and emotional wellbeing.
I'm happy to have a chat to you over the phone about your concerns for your son, if you like.
For more information about me and my work you can have a look at my website - playfulpathways.co.uk
I wish you and your son all the best.