Jonathan Powell (Labour adviser) 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 division. He runs the charity Inter Mediate which works on armed conflicts around the world. In 2014, David Cameron appointed Powell to
Jonathan Powell (musician) the Altarus, Largo, Toccata, ASV and Danacord labels, including works by Alexander Goldenweiser, Joseph Marx, Alexander Krein, and others. Powell has also contributed to "The New Grove Dictionary of Music and Musicians". He is also the author of many editions of various composers' sheet music. Jonathan Powell (musician) Jonathan Powell (born 1969) is a British pianist and self-taught composer. He was a student of Denis Matthews and Sulamita Aronovsky. He made his performing debut at the age of 20 in the Purcell Room in London. His repertoire is broad and ranges from Bach to many contemporary works (he is associated