Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Legris Yvan
 2. Date of Event Requiring Statement (Month/Day/Year)
06/12/2012		 3. Issuer Name and Ticker or Trading Symbol
Aon plc [AON]
(Last)
(First)
(Middle)
10 DEVONSHIRE SQUARE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
CEO EMEA - Aon Hewitt
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

LONDON, X0 EC2M 4PL		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Unit Award (Right to Receive) 03/15/2013 03/15/2017 Class A Ordinary Shares 12,808 (2) $ (1) D  
Restricted Stock Unit Award (Right to Receive) 03/15/2013 03/15/2015 Class A Ordinary Shares 5,715 (3) $ (1) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Legris Yvan
10 DEVONSHIRE SQUARE
LONDON, X0 EC2M 4PL		       CEO EMEA - Aon Hewitt  

Signatures

/s/ Matthew M. Rice - Matthew M. Rice pursuant to a power of attorney from Yvan Legris 06/14/2012
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The restricted stock unit award will convert to Aon Class A Ordinary Shares on a 1-for-1 basis.
(2) Of this amount, 2,561 restricted stock units will vest on each of March 15, 2013 and March 15, 2014 and 2,562 restricted stock units will vest on each of March 15, 2015, March 15, 2016 and March 15, 2017.
(3) Of this amount, 1,905 restricted stock units will vest on each of March 15, 2013, March 15, 2014 and March 15, 2015.
 
Remarks:
Exhibit List: Exhibit 24 - Power of Attorney of Yvan Legris.

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