JONATHAN POWELL: As Tony Blair's chief of staff, the tousle-haired Jonathan Powell was at the PM's side during at every key moment in the build-up to war. Along with Alastair Campbell, he was Blair's most trusted confidant as the No 10 struggled to win support for the action. Powell, a former diplomat, was heavily involved in the drafting of the intelligence dossier that made the case for the invasion and the Hutton Inquiry heard how he urged MI6 chief John Scarlett to toughen the dossier's language. He was not criticised by Lord Hutton or the subsequent Butler inquiry, although the latter had strong words about the informal "sofa style" of government that had developed under Powell. He left Downing Street in June 2007 when Blair stepped down. He later took up a position at Morgan Stanley's investment banking arm.