SPACE (Supporting Families in Hertfordshire for Autism, ADHD and related conditions) http://www.spaceherts.org.uk/
SENDIASS (Support for parents with Children who have an SEN) https://www.sendirect.org.uk/providers/information-advice-and-support-services-network/my-services/hertfordshire-sendiass/
Angels (Angels Support Group for Parents / Carers of Children with Autistic Spectrum Disorder and ADHD) https://directory.hertfordshire.gov.uk/kb5/hertfordshire/directory/service.page?id=4EeuiBzDDOA
Links to help apply for various benefits.
Link to the Department of Education
Link to Reach 2 Academy trust