Aon (AON)

Disclosure Controls and Procedures

        The Registrant has established disclosure controls and procedures to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to the officers who certify the Registrant's financial reports and to other members of senior management and the Board of Directors.

        Based on their evaluation as of December 31, 2008, the principal executive officer and principal financial officer of the Registrant concluded that the Registrant's disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")), were effective as of the end of the period covered by this report to ensure that the information required to be disclosed by the Registrant in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the SEC rules and forms.

        During the quarter ended December 31, 2008, there were no changes in the Registrant's internal control over financial reporting (as defined in Rule 13a-15(f) of the Exchange Act) that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting.

Disclosure Controls and Procedures

        The Registrant has established disclosure controls and procedures to ensure that material information relating to the Registrant,
including its consolidated subsidiaries, is made known to the officers who certify the Registrant's financial reports and to other members of senior management and the Board of Directors.

        Based
on their evaluation as of December 31, 2008, the principal executive officer and principal financial officer of the Registrant concluded that the Registrant's disclosure
controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")), were effective as of
the end of the period covered by this report to ensure that the information required to be disclosed by the Registrant in reports that it files or submits under the Exchange Act is recorded,
processed, summarized and reported within the time periods specified by the SEC rules and forms.

        During
the quarter ended December 31, 2008, there were no changes in the Registrant's internal control over financial reporting (as defined in Rule 13a-15(f) of
the Exchange Act) that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting.

Disclosure Controls and Procedures

        The Registrant has established disclosure controls and procedures to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to the officers who certify the Registrant's financial reports and to other members of senior management and the Board of Directors.

        Based on their evaluation as of December 31, 2007, the principal executive officer and principal financial officer of the Registrant concluded that the Registrant's disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")) were effective as of the end of the period covered by this report to ensure that the information required to be disclosed by the Registrant in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the SEC rules and forms.

        During the quarter ended December 31, 2007, there were no significant changes in the Registrant's internal control over financial reporting (as defined in Rule 13a-15(f) of the Exchange Act) that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting.

Disclosure Controls and Procedures

        The Registrant has established disclosure controls and procedures to ensure that material information relating to the Registrant, including its consolidated
subsidiaries, is made known to the officers who certify the Registrant's financial reports and to other members of senior management and the Board of Directors.

        Based
on their evaluation as of December 31, 2007, the principal executive officer and principal financial officer of the Registrant concluded that the Registrant's disclosure
controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")) were effective as of the
end of the period covered by this report to ensure that the information required to be disclosed by the Registrant in reports that it files or submits under the Exchange Act is recorded, processed,
summarized and reported within the time periods specified by the SEC rules and forms.

        During
the quarter ended December 31, 2007, there were no significant changes in the Registrant's internal control over financial reporting (as defined in
Rule 13a-15(f) of the Exchange Act) that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting.

Disclosure Controls and Procedures

        The Registrant has established disclosure controls and procedures to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to the officers who certify the Registrant's financial reports and to other members of senior management and the Board of Directors.

        Based on their evaluation as of December 31, 2006, the principal executive officer and principal financial officer of the Registrant concluded that the Registrant's disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")) were effective as of the end of the period covered by this report to ensure that the information required to be disclosed by the Registrant in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the SEC rules and forms.

        During the quarter ended December 31, 2006, there were no significant changes in the Registrant's internal control over financial reporting (as defined in Rule 13a-15(f) of the Exchange Act) that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting.

Disclosure Controls and Procedures

        The Registrant has established disclosure controls and procedures to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to the officers who certify the Registrant's financial reports and to other members of senior management and the Board of Directors.

        Based on their evaluation as of December 31, 2005, the principal executive officer and principal financial officer of the Registrant have concluded that the Registrant's disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) are effective to ensure that the information required to be disclosed by the Registrant in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the SEC rules and forms.

        There were no significant changes in the Registrant's internal controls or in other factors that could significantly affect those controls subsequent to the date of their most recent evaluation.

Disclosure Controls and Procedures

        The Registrant has established disclosure controls and procedures to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to the officers who certify the Registrant's financial reports and to other members of senior management and the Board of Directors.

        Based on their evaluation as of December 31, 2004, the principal executive officer and principal financial officer of the Registrant have concluded that the Registrant's disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) are effective to ensure that the information required to be disclosed by the Registrant in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the Securities and Exchange Commission rules and forms.

        There were no significant changes in the Registrant's internal controls or in other factors that could significantly affect those controls subsequent to the date of their most recent evaluation.