There are a number of great resources and links to local and national support groups, information providers and methods of supporting young people with Autism which can help families supporting their child through all stages of their life. 

Local Information links 

Oxfordshire Family Information Directory
Yellow Submarine
Autism Oxford
Autism Family Support
Oxfordshire Learning Disabilities Community

National Information and Useful Websites 

Autism Links
National Autistic Society
PECS UK
Widgit Symbol Software
ASD Visual Aids
Special Needs Jungle
Contact a Family
Council for Disabled Children
Preparing for Adulthood
Twinkl
Challenging Behaviour Foundation