Aon names Tim Fletcher head of North America M&A businessAon on Wednesday named Tim Fletcher head of M&A, transaction advisory and financial services for North America. He succeeds Christian Hoffman, who was recently promoted to CEO of Commercial Risk at Aon. New York-based Mr. Fletcher will report to Brian Wanat, CEO of Commercial Risk Solutions in North America. Mr. Fletcher has led Aon’s financial services group as national practice leader for the past five years and will continue in that role while assuming his new responsibilities, the company said.