Jon Day

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Jonathan "Jon" Stephen Day, CBE (born 23 April 1954)[1] is a British Civil Servant currently serving as the Chairman of the Joint Intelligence Committee and Head of the Joint Intelligence Organisation at the Cabinet Office.[2]

Day initially trained as a solicitor, and joined the Civil Service in 1979. Day has worked in the Ministry of Defence, the Foreign & Commonwealth Office and the Cabinet Office, and has been seconded to NATO and done a year's sabbatical at Harvard University. He was awarded a CBE in 1998 for his contribution to the Strategic Defence Review as Director of Defence Policy.[3][4]

Offices held[edit]

Government offices
Preceded by
Director-General, Security Policy
Ministry of Defence

Succeeded by
Not disclosed[5]
as Director-General, Security Policy & Operations
Preceded by
Ursula Brennan
Second Permanent Secretary
Ministry of Defence

Succeeded by
None yet appointed
Preceded by
Sir Alex Allan
Chair of the
Joint Intelligence Committee


External links[edit]


  1. ^ Day, Jon (2012). "DAY, Jonathan Stephen". Who's Who 2012, online edition. A & C Black. Retrieved 5 March 2012. 
  2. ^ "New Chair for the Joint Intelligence Committee". Cabinet Office. 2012-03-02. Retrieved 5 March 2012. 
  3. ^ "Second Permanent Under Secretary — Jon Day". Ministry of Defence. 2011. Retrieved 5 March 2012. 
  4. ^ The London Gazette: (Supplement) no. 55354. p. 7. 30 December 1998. Retrieved 5 March 2012.
  5. ^ "Organogram and staff pay data for Ministry of Defence — Central TLB Senior staff, as of September 2011". Ministry of Defence. September 2011. Retrieved 5 March 2012.