Jonathan Powell (Labour adviser) to the Iraq Inquiry. Powell has four children: two daughters with his partner, Sarah Helm, and two sons from a previous marriage. Jonathan Powell (Labour adviser) Jonathan Nicholas Powell (born 14 August 1956) is a British diplomat who served as the first Downing Street Chief of Staff, under British prime minister Tony Blair from 1997 to 2007. He was the only senior adviser to last the whole period of Blair's leadership. During this period Powell was also the chief British negotiator on Northern Ireland. In 2007, Powell joined Morgan Stanley as a full-time senior managing director of its investment banking
Jonathan Powell (producer) later said he wanted to "fuck off... or die, really". Powell was held responsible for commissioning "Eldorado", a new soap opera that lasted only a year and was critically and popularly regarded as a costly fiasco and an embarrassment for the BBC. He remained controller of BBC1 until 1993, when he left the BBC to join the independent company Carlton Television, where he became Director of Drama & Co-Production. As at 2013, he is Head of the Department of Media Arts at Royal Holloway, University of London. Jonathan Powell (producer) Jonathan Leslie Powell (born 25 April 1947 in Sittingbourne, Kent)