Relocation in the UK - Where to go and where to avoid?

Hi, we live in Texas but are planning to move back home to the UK soon. Moved here 10 years ago with my work. My little boy was only 3  when we left and in the last 10 years we have learned an awful lot - not least his diagnosis and so on.

So - my question for the folks here is where in the UK has great services for kiddos on the spectrum and where should we avoid? We havent any set plans right now and any and all suggestions/recommendations are very much appreciated!

Previously lived in Louth, Lincolnshire - Beverley, North Yorks and finally in Aberdeenshire prior to moving to the states,

Cheers,

Mark