Communication and Learning Enterprises are a not-for-profit communication aid centre which supports communication and learning needs of children and adults who need Alternative and Augmentative Communication and Assistive Technology.
They have a great self assessment ACC toolkit available to downloadfrom http://www.candleaac.com/AAC_Self-Assessment_Tool-Kit_Home_Page.htm
A highly recommended site for all those working in ACC field.
http://www.contactcandle.co.uk/