Local offer
The Hertfordshire local offer page offers some guidance and support for families of children with Autism.
https://www.hertfordshire.gov.uk/microsites/local-offer/services-for-children-and-young-people/speech-language-and-communication.asp
Helpline
The speech, language, communication and autism helpline is available on a Tuesday and Wednesday between 1.30pm and 4pm on 01442 453920