UK Accessibility Investigation of 1,000 Web Sites - Results Released
http://www.usabilityprofessionals.org/upa_publications/upa_voice/volumes/2004/April/ukaccessibility.html

Dodd, Jon
Usability Professionals Association
2004

Abstract:

An investigation of 1000 UK Web sites carried out on behalf of the Disability Rights Commission (DRC) reveals unacceptably poor (in fact woeful) accessibility. At least 81% of sites failed to meet the minimum accessibility standard, and this figure is likely to be much higher.