Aon Announces Second Quarter 2015

Earnings Release and Conference Call

LONDON - July 7, 2015 - Aon plc AON, the leading global provider of risk management and human resource consulting and outsourcing, plans to announce second quarter 2015 results on Friday, July 31^st, 2015 in a news release to be issued before the market opens. Greg Case, president and CEO, will host a conference call at 7:30 am Central Time on Friday, July 31^st, 2015. The conference call will be broadcast live through Aon's website at www.aon.com. Adobe Flash is required to listen to this webcast. A replay will be available shortly after the live webcast. The earnings release and supplemental slide presentation will be available on Aon's web site at www.aon.com.

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About Aon
Aon plc AON is a leading global provider of risk management, insurance brokerage and reinsurance brokerage, and human resources solutions and outsourcing services. Through its more than 69,000 colleagues worldwide, Aon unites to empower results for clients in over 120 countries via innovative risk and people solutions. For further information on our capabilities and to learn how we empower results for clients, please visit: http://aon.mediaroom.com.

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Investor Contact:
Scott Malchow
Senior Vice President, Investor Relations
+44-207-086-0100

Media Contact:
Cybil Rose
Aon Media Relations
312-755-3537