Are you after a special needs school? If so here's a place you can look them up: http://www.specialneedsuk.org/findaschool.asp
If you want an ordinary school, then I'd very very strongly recommend personal recommendation. I've taught in a great supportive (sadly all-girl!) school but have heard a lot of horror stories from parents having to fight constantly for help from their schools even when the child has a statement .
You could perhaps also try speaking to the NAS - maybe they could advise you? http://www.autism.org.uk/living-with-autism/education-and-transition.aspx
I have a ds with asd. DS is non verbal and on the severe side of it. We want to move house to get him the best care possible but where do i find it. I am really looking at london and maybe a place that will have the funding to increase his care and one where we wont have the expense of a tribunal case as we already went through that a couple of years ago.
DS already has a statement in place and is at school at present. Any advise would be great. Thanks.