The Very Rev. David Ison has served as dean of St. Paul's Cathedral in London since May 2012. In this ENS film profiling the ministry of St. Paul’s, Ison talks about the role of the cathedral today and throughout its 1400-year history, as well as the impact and lessons learned from the Occupy London movement that encamped outside the building for more than four months from October 2011. Produced by Matthew Davies