Daniel Ralph is an engineering manager at BTexact Technologies, where he is responsible for a number of projects in the mobile applications arena. He works on application development, application integration and systems migration, and is also interested in the commercial, social and political implications associated with the impact of the knowledge society. Daniel is a member of the British Computer Society and is a Chartered Engineer. He has authored a number of journal papers and presented at conferences on the subject of delivering services via mobility portals and technologies of the mobile Internet.

Stephen Searby joined BT in 1979 and began work on an interactive video library for the BT switched-star cable television network. More recently he has been responsible for managing the development of content management and personalisation capabilities for Internet portals and leads research activities developing new personalisation technology. Stephen is a member of the IET, the Association for Project Management and the Society of Cable Telecommunication Engineers, and is a Chartered Engineer.