helen
Let me explain.
the educational psychologist you son saw is employed by the Local Authority.
Any suggestions he makes for additional support wil be funded by that same Local Authority that employes him.
There fore Ed Pyschs try to suggest as little as possible as additonal support is expensive and their employers don't like paying for it.
You may think this is a hlaf-baked conspiracy theory but others on here will back me up - it's the norm.
Schools, Ed Pyschs and LAs do not always acknowledge the true extent of a child's problems becausethey are unwilling to pay to provide the support the child requires. there is not an unlimited pot of money.
However..
If you employed your own private ed Pysch to do a true assessment of your son all his difficuties and support required would be identified. You can then use that private assessment to support your application for a Statement or to get additional support.
getting the right level of support is quite a battle for many of us. Please don't assume that because the LA's own ed Pysch said a Statement was not reuired that that is necessarily true.
the difference between School Action Plus and a Statement is that any support provided to your son under schools Action Plus (SA+) can be withdrawn without notice at any time.
Whereas.. all support that is delivered because it is stated a necessary on a Statement must be delivered - it's a legal rqeuirement with which school must comply.
So you can start to see why the LA and the Ed Pysch would rather your son did not have a Statement which would commit them to expensive on-going support and would rather that you believed his needs could be met by support delivered under Schools Action Plus - for as long as the budget lasts.
Best wishes