Helen Petrie is Professor of Human Computer Interaction in the Department of Computer Science at the University of York in the UK. Her research centres on the use of new technologies for people with disabilities and older people, particularly the web and on new technologies for cultural heritage. She has been involved in many British and international projects and has published extensively. She has advised numerous private and public sector organisations on web accessibility and accessibility issues of other new technologies. She directed the largest study in the world on web accessibility for the Disability Rights Commission of Great Britain and a similar study for the UK Museums, Libraries and Archive Council and has conducted many smaller studies of web accessibility. In 2009 she was awarded an Association for Computing Machinery (ACM) Award for the social impact of her research.