To my knowledge no GP was ever involved other than to say that I looked healthy and I'd probably just grow out of it, my parent's never got me assessed for autism, I think they felt that a label wouldn't really help anything. I probably had a very unhealthy childhood but it doesn't seem to have affected anything now.
They dont do anything anyway. Since her working diagnosis 3 years ago and full diagnosis last year she gets no help at all. Wife saw a psychologist last week for the first time parent only apt. And just told us how to help her (everything we were already doing)