Support groups in Oxfordshire

Hi, I am new to all this. My little girl is in the process of being assessed, they are 90% sure she is autistic.

I am moving to the Oxfordshire/Northamptonshire area and wondered if there are any support groups or just a group that meets up with Autistic under 5's.

I have seen there seems to be a few places in Banbury but just wondered what other areas are good.

Thanks