Prime Minister's Office
Downing Street and Number 10 are commonly used terms for the Prime Minister's Office.
The office is staffed by civil servants and special advisers who support the Prime Minister and ensure he can carry out his wide range of functions, from international diplomacy to policy-making.
Most staff are based inside the offices of 10 Downing Street.
Who's who in the Prime Minister's Office
Tom Scholar is Chief of Staff and Principal Private Secretary to the Prime Minister.
Michael Ellam is Director of Communications and the Prime Minister's Spokesman.
Gavin Kelly* is Deputy Chief of Staff.
Spencer Livermore* is Director of Political Strategy.
Sue Nye* is Director of Government Relations.
Dan Corry* is Head of Policy Unit.
Damian McBride* is adviser to the Prime Minister on political press issues.
Jeremy Heywood is Head of Domestic Policy and Strategy.
Jon Cunliffe is Head of International Economic Affairs, Europe and G8 Sherpa.
Simon McDonald is Head of Foreign and Defence Policy.
* = Special Adviser.