Okay, this isn't strictly speaking a bio, but it covers what I have been upto for the past few years. You can fill in the gaps from my CV.
Until the end of 2001 I was a Reader in the Department of Computer Science at the University of Liverpool where I worked in the Agent ART group. This includes a number of people interested in the general areas of argumentation and intelligent agents.
I continue as a Visiting Professor in the Agent ART group.
I am also a Visiting Professor in the Department of Informatics at King's College London, and am affiliated with the Department of Biomedical Informatics at Columbia University.
From January 2002 until September 2002 I was a Visiting Scholar in the Center for Co-ordination Science at MIT, and an Adjunct Professor in the Department of Computer Science at Columbia University
In addition, I edit the Knowledge Engineering Review.