From the YouTube description:
This is the full, uncut interview with Professor Michael Baum which was filmed for Channel 4's “The Enemies of Reason.” Michael Baum is Professor Emeritus of Surgery at University College London. The discussion covers alternative and complimentary [sic] medicines, and how they interact with scientific medicine. This video is provided free online by The Richard Dawkins Foundation for Reason and Science and http://richarddawkins.net