Speed bird 1
My last post was succinct. I don't think anyone else has disagreed so you would be advised to follow it. Question 178 is about inherited diseases. You can answer no to all the family history questions: if you declare the autism under remarks. To not make any comment would IMHO be risking upsetting the doctor. Not a good start
In terms of your language delay, you do not need to declare if it is no longer a problem, if you continued in mainstream school and had no medical intervention. If you had medical help or attended special schools then clearly it becomes a medical condition and must be declared
As previously pointed out, we don't think you have a problem but if you try to hide the facts or seek support for manipulation you are likely to trip yourself up.