[4] He served in the 21 SAS (Artists Regiment), becoming a Sergeant in 1979 before entering Royal Military Academy Sandhurst in 1982 and becoming a Captain.
[6] Hannam has a bachelor's degree in engineering from Imperial College London, and worked for the construction company Taylor Woodrow in Nigeria and Oman.
[5][7] He then studied at the London Business School, and moved to the US, and worked for Salomon Brothers and later JP Morgan.
He acted for the Hong Kong Government during the Asian crisis of 1998 in its divestiture of its equity portfolio.
[11] In April 2012, Hannam stood down as JP Morgan's global chairman of equity capital markets, in order to deal with the allegations.
[13] Hannam continues to serve as chairman of the corporate finance boutique where the CEO is former JPMorgan colleague Neil Passmore.