I would also recommend the Helen Arkyll Centre in Surrey, near Farnham and not far off the M3. It was also recommended by DD's private school who find that their reports are a good basis for providing further support.
NAGC is a good idea or try Helen Arkell Dyslexia Centre which is in Surrey. One of mine behaved worse at home that at school as he was working so hard to hold it all together at school (dyspraxia) and he was shattered when he came home, so behaviour could go south very quickly.
(this is the brief version and I'm posting on SN and here to see if it overlaps and anyone can help with both sides)
I've had on going behavioural problems with almost 6yo DS since he was about 4 months old, several HV's and the school liason officer has seen him, none of their suggestions have worked so I still have huge problems getting him to behave at home.
He is lovely at school but still lashes out, throws things and bites me every day, I know all the tricks to get children to behave, but mine won't play ball so I am constantly on egg-shells with him. School have moved him up a year in maths (the clever bit that made me want to pick the G&T brains on here!) and he is doing very well with everything else but they say his attention span isn't great.
I have no idea what I am doing wrong or what might be going on in his head, but I know we can't carry on like this as he will be uncontrollable when he's a teenager. School won't assess him as they say he's fine . Money isn't really an object for paying privately as my mum has offered to pay as she agrees that something isn't quite right.
If anyone can suggest someone in Hampshire then I would appreciate it.