Which therapy, help!

Yep!

CBT generally speaking does not work for autistic people, basically because a lot of what we worry about, whilst irrational to most people is actually real for us because we are experiencing the world differently and no amount of trying to think about that any other way will change what we are sensing and how we are sensing it.  I've had a ton of that plus other psychology, prior to my identification as autistic.  At best, I derived no benefit.  At worst it did me a lot of damage trying to dig at problems that were not there, whilst not listening to what I was trying to tell them and then blaming me when that didn't work because they were trying to cure conditions that didn't exist.

That's not to put you off all therapy.  But whatever you do have needs to be properly autism informed.  The therapist needs a really good grounding in autism - or be autistic themselves - and have a really positive autistim outlook.  Approaches like ABA can seem to make the person quiet and compliant from a neurotypical point of view but actually deepens the anxiety of the autistic person because the strong message to the autistic person is 'being you isn't acceptable'.  Young autistic people need to unmask, not mask up.  They need to know it's OK to be themselves.

I guess a lot will depend on what your son feels he need therapy for.  For anything sensory, this probably isn't CBT or anything psychological at all, but rather sensory integration work with an expert occupational health person, for anxiety perhaps autism informed counselling.

Thank you. Yes this is exactly my concern. Where do we even start with this and how do we find someone?!!

Thank you. Yes this is exactly my concern. Where do we even start with this and how do we find someone?!!

How to find a therapist: BACP Therapist Directory

This is the directory of qualified therapists in the UK.  I'd search for someone local to you and who specialises in autism,  let them assess and recommend what might help given the problems.

If it's something other than they offer which is required they might be able to point you in the right direction for the right therapy.