Chief of Staff: Jonathan Powell, a former Foreign and Commonwealth Office (FCO) diplomat in Washington, now a Special Adviser - i.e. a political appointee with temporary civil servant status.
Director of Communications and Strategy: Alastair Campbell, formerly Political Editor of the Daily Mirror and Press Secretary to Tony Blair in Opposition (1994-97) and then in Government (1997-2001), now a Special Adviser with temporary civil servant status in charge of press, strategic communications and research.
Head of Political and Government Relations: Baroness (Sally) Morgan, former Labour Party official and Political Secretary to Tony Blair, now responsible for relations across Government, with the devolved Administrations and some foreign Administrations.
Integrated Policy Directorate for domestic policy advice to the Prime Minister, formed by the merger of the Number 10 Private Office and the Policy Unit; headed by Jeremy Heywood, a former Treasury civil servant.
European Adviser's Office for European policy advice to the Prime Minister; headed by Sir Stephen Wall, an FCO official who also heads the European Secretariat in the Cabinet Office.
Foreign Policy Adviser's Office for foreign policy advice to the Prime Minister; headed by Sir David Manning, an FCO official who is also Head of the Overseas and Defence Secretariat in the Cabinet Office.
Delivery Unit, based in the Cabinet Office and headed by Michael Barber, a former Professor of Education at London University, there to help ensure the achievement of priority objectives in health, education, crime and transport under the political supervision of Lord Macdonald, now Minister for the Cabinet Office and formerly a Scottish media tycoon.
Office of Public Services Reform, based in the Cabinet Office and headed by Wendy Thomson, a former local authority Chief Executive, reporting to the Prime Minister through the Cabinet Secretary to explore ways of taking forward radical reform of the civil service and the public services.
Forward Strategy Unit, headed by Geoff Mulgan, formerly at the think tank Demos and then in the Policy Unit at 10 Downing Street (1997-2001), to undertake strategy projects at the Prime Minister's request and to work closely with the Performance and Innovation Unit in the Cabinet Office which is also headed by Geoff Mulgan.
Political Office, consisting of four political staff headed by Robert Hill and five administrative support staff, with its staff costs met by the Labour Party and its marginal costs met from the overall budget for 10 Downing Street.