He was from 2006 to 2015 the chief of staff to George Osborne, the British Chancellor of the Exchequer, and chair of the Council of Economic Advisers in the UK Treasury.
[1] He then went to Magdalen College, Oxford University where he initially studied Physics, but then switched to Philosophy, Politics and Economics, graduating with first-class honours.
[6] One of his tutors at Oxford was Stewart Wood, who went on to become an adviser to both Gordon Brown and Ed Miliband, and the two apparently remained friends.
[11] In August 2015 Harrison joined the investment firm BlackRock where he is a portfolio manager and chief macro strategist for multi-asset strategies.
[23] Harrison was appointed a Commander of the Order of the British Empire (CBE) in the 2015 Dissolution Honours Lists on 27 August 2015.