 In 1988 Sullivan became UK/Ireland Marketing Manager of AIU.Sullivan was appointed Assistant Managing Director of AIG Europe (UK) Ltd. in 1989 and Chief Operating Officer in 1991.In 1993 he was named President of AIU's UK/Ireland Division and Managing Director of AIG Europe (UK) Ltd. Sullivan became Senior Vice President, Foreign General Insurance in 1996, and Executive Vice President, Foreign General in 1998.