These are links which have been useful for us. Please do not use any of these as diagnostic tools, only professionals can do that & most kids are too complex for a form anyway!
Coventry Grid (ASD vs Attachment Disorders) here.
Feelings face cards to aid recognition of facial expressions & emotions here.
Incredible 5 Point Scale.
Cerebra DLA guide, a must for those trying to claim for someone with a neurological condition. I'd recommend it to anyone claiming DLA as it explains what is required much more clearly than the DWP guide.
Talking Point is useful for anyone concerned about their child's speech.