Try 'something special' - its meant for the kids but quite watchable. Its on BBC iPlayer. will also help
do you have a SALT? they OFTEN run courses. many ASD groups do as well. Portage/inclusion may also know someone whos able to help.
SOme colleges also do it, its a lot cheaper than using the official bods that do courses - around £50 per course instead of around £200.
HTH XXX