Name of person dealing (Note 1)

State Street Global Advisors & Affiliates

Company dealt in

Aon plc

Class of relevant security to which
the dealings being disclosed relate (Note 2)

US$0.01 ordinary shares

Date of dealing

06th May 2021

(1) Relevant securities

(2) Derivatives (other than options)

(3) Options and agreements to
purchase/sell

Total

Class of relevant security:

(1) Relevant securities

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell

Total

Product name,
e.g. CFD

Nature of transaction

(Note 6)

Number of relevant securities

(Note 7)

Price per unit

(Note 5)

N/A

Product name,
e.g. call option

Writing, selling,
purchasing
varying etc.

Number of
securities to which
the option relates
(Note 7)

Exercise
price

Type, e.g.
American,
European etc.

Expiry
date

Option money
paid/received
per unit (Note 5)

N/A

Product name,
e.g. call option

N/A

Nature of transaction
(Note 8)

N/A

Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated.

N/A

Is a Supplemental Form 8 attached? (Note 9)

NO

Date of disclosure

07th May 2021

Contact name

Lionel Colaco

Telephone number

020 33956098

If a connected EFM, name of offeree/offeror with which connected

N/A

If a connected EFM, state nature of connection (Note 10)

N/A