There are a number of websites which offer a range of information on ADHD and Autism. Gems4Health and Parenting Special Children also offer workshops to share strategies and enable you to support your children at home and as they navigate their school career.
Gems4Health
Autism Berkshire
The ADHD Foundation
https://www.adhdfoundation.org.uk/
Parenting Special Children
https://www.parentingspecialchildren.co.uk/
The Autism Group, Maidenhead
https://www.theautismgroup.org.uk/
National Autistic Society