Education
University of Nottingham.
University of Nottingham.
Day initially trained as a solicitor, and joined the Civil Service in 1979. During his career, Day worked in the Ministry of Defence, the Foreign & Commonwealth Office and the Cabinet Office, was seconded to North Atlantic Treaty Organization, and done a year"s sabbatical at Harvard University. Day retired at the end of November 2015, and was replaced by Charles Farr as Chair of the JIC.
Day was appointed Commander of the Order of the British Empire (Commander of the Order of the British Empire) in the 1999 New Year for his contribution to the Strategic Defence Review as Director of Defence Policy at the MoD and was knighted in the 2016 New Year.