The Deputy Prime Minister Nick Clegg (right) and The Chief Secretary to the Treasury, Danny Alexander talk to Sir Gus O'Donnell Secretary to the Cabinet and Head of the Home Civil Service (2nd left with folder), and Jeremy Heywood (2nd right), currently Permanent Secretary at No. 10, inside the Prime Minister's office..The  Cabinet Secretary Sir Gus O'Donnell steps down at the end of the year and is replaced by Jeremy Heywood (left), currently Permanent Secretary at No. 10, will replace Gus O'Donnell as Cabinet Secretary. Photo By Andrew Parsons/ i-Images
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