Universal have posted the full Diagon Alley Red Carpet Webcast, which was livestreamed during the event last night.  We will have our own video up, but for now take a look at the official video featuring interviews with Matthew Lewis, Bonnie Wright, Evanna Lynch, James Phelps, Oliver Phelps, Tom Felton, Robbie Coltrane, Helena Bonham Carter, Domhnall Gleeson and Warwick Davis!