Giles is co-founder and an executive director of Amber Infrastructure, and its current CEO. He has been involved in raising in excess of £500m for investment into infrastructure over the last five years and leads the investor facing business with Amber Infrastructure. He led the creation of the specialist infrastructure investment company International Public Partnerships Limited (INPP), which is listed on the London Stock Exchange, whilst he was joint head of the European public infrastructure business unit at Babcock & Brown. In late 2008/early 2009 he, together with Hugh Blaney, led the management buyout (MBO) of the social infrastructure business within Babcock & Brown. He is a director of INPP, leads the investment advisory team and chairs both the Amber executive committee and the investment committees responsible for giving advice to Amber's clients. He has worked on project finance and infrastructure transactions since 1992, and has been involved in the origination, development, management and investment in an extensive number of social infrastructure projects in the accommodation and transport sectors. Prior to joining Babcock and Brown in 1999, Giles was a lawyer and was a partner at a London City law firm where he specialized in infrastructure finance.