Hiya,
My child has Autism and I was told I was Autistic by their team so completely a questionnaire. I scored high and was referred for an ASD assessment through NHS. The waiting time is 2 years so I sought a private assessment in the meantime as I was struggling so much.
I was assessed by these people. It was Β£700.
They use the same criteria as NHS
The NHS is overwhelmed with referrals. Another of my children had extremely obvious signs and was refused assessment. Until school and hospital argued for referral to go ahead.
I feel for you. Itβs not easy to live with. It affects every aspect of my life.