Jonathan Powell (civil servant)

Jonathan Nicholas Powell is a British diplomat and civil servant. In November 2024, he was announced as the UK National Security adviser, serving in Downing Street under British prime minister Keir Starmer. He previously served as the second 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.