A spotlight on

dark patterns.

Expert witness services for deceptive user experiences in digital products.

Harry Brignull

Harry is the user experience specialist who coined the term ‘dark patterns’ in 2010. He runs darkpatterns.org to raise public awareness of deceptive digital practices.


Harry Brignull has a PhD in Cognitive Science. As a noted expert in dark patterns, he is often asked to provide his substantiated opinion on deceptive digital practices.

Harry welcomes enquiries about expert witness services in dark patterns.

His critical work and views have already been used by The Wall Street Journal, Vox, The New York Times, The Financial Times, The Verge, Gizmodo, The Atlantic, Fast Company, Ars Technica, Consumer Reports and The Norwegian Consumer Council.

Since 2006, Harry's UX consultancy clients have included Spotify, Pearson, HMRC, Smart Pension, and The Telegraph.

Get in touch

+44 (0) 7598 239869